Fender S Series Serial Numbers: 1976–1981 Dating & Value Guide

The S prefix on a Fender serial number places the guitar in the late 1970s, at the end of the CBS era in Fullerton, California.

Fender S-Series Serial Numbers: 1976–1981 Dating & Value Guide

Fender S-series serial numbers mark the beginning of Fender's letter-prefix dating system and the final years of CBS ownership. If your serial starts with the letter S followed by a single digit, you are looking at a guitar built during one of the most collected periods in Fender history. The S prefix covers the last large-scale USA production before the sale to FMIC, the move away from the old six-digit numbering system, and the direct predecessor to the E-series format of the 1980s.

This guide covers every common S prefix: S6, S7, S8, and S9 for USA instruments made at the Fullerton factory. You will learn how to read the number, where it appears, how to separate a genuine S-series Fender from a changed neck plate or re-stamped serial, and why these guitars command strong vintage prices today.

If you already have the serial in hand, run it through the free Fender serial number decoder for an instant year-and-country read.

What the S Prefix Means

The letter prefix system Fender introduced in the mid-1970s made dating a guitar a two-character exercise. S stands for the late 1970s. The digit after the S is the last digit of the production year. An S7 was built in 1977, an S8 in 1978, and an S9 in 1979, with some S9 examples carrying into the very early 1980s as the factory transitioned to the E prefix.

The S system ran entirely under CBS ownership at the Fullerton factory. That matters for two reasons. First, every S-series guitar is a USA-made Fender from a single factory. Unlike the E prefix, which was shared with Japan, the S prefix is almost exclusively associated with American production. Second, the S-series represents the last full generation of CBS-era electrics before the 1985 sale to FMIC. Collectors often treat clean S-series instruments as the final evolution of the original Fullerton line.

The biggest source of confusion is the overlap with the six-digit serial system that ran from 1965 to 1976. A 1976 guitar might carry a late six-digit serial or an early S6 prefix, depending on when it left the factory. For that reason, S6 guitars are less common than S7, S8, and S9, and they are usually studied alongside the final six-digit instruments rather than as a completely separate group.

Why Late-1970s Fenders Matter Today

The late 1970s sits near the top of Fender's collectible timeline. Pre-CBS instruments are the blue-chip investments, but clean CBS-era guitars from the final years have become genuinely desirable. By S7, S8, and S9, Fender had refined the three-bolt neck joint, settled on reliable hardware, and was building instruments with stable wood that had dried for decades. For players, an S-series Fender offers vintage tone and feel with parts that are still available and a price that is often lower than an equivalent 1960s model.

The Complete S-Series Serial Number Table

Use this table as your first reference. All S-series guitars in this guide were built at the Fullerton, California factory.

Prefix	Year	Country	Factory	Notes
S6	1976	USA	Fullerton	First year of the letter-prefix system; overlap with late six-digit serials
S7	1977	USA	Fullerton	Peak CBS-era production; common across the standard line
S8	1978	USA	Fullerton	Strong year for Strats and Teles; vintage market favourite
S9	1979–1981	USA	Fullerton	Final S-prefix years; transition into the E prefix begins

If your serial starts with S7 or S8, you are looking at a late-1970s Fullerton Fender made during the peak CBS years. S9 guitars can be the most complicated because the transition to the E prefix happened gradually around 1980 and 1981. Some S9 guitars were among the last instruments to leave Fullerton before the E system took over. If you have an S9 with hardware or stamp details that look more like an early 1980s guitar, it may be a very late example.

USA S-Series: Fullerton Under CBS

The entire S-series story happens at one factory. Fullerton, California was Fender's home from the early 1950s until 1985, and the S-prefix guitars are the last big group of electrics built there before the sale to FMIC.

Fullerton-Era S-Series (S6–S9)

CBS-era Fullerton instruments from the late 1970s are known for several distinctive traits. The neck profiles are often slim and fast, a departure from the fuller 1950s and early 1960s shapes. Polyester finishes became standard, thicker and harder than the nitrocellulose lacquer of the 1960s. Many models used the three-bolt neck plate with the tilt-adjustment mechanism, a CBS design that remains controversial among players. Pickups were still Fender single-coils on the standard models, though wind specifications drifted slightly through the 1970s.

S7 and S8 guitars are the most common in the wild. You will find them as Standard Stratocasters, Standard Telecasters, Precision Basses, and Jazz Basses. S6 guitars are less common because 1976 was the transition year away from the six-digit serial format. S9 guitars overlap with the start of the E-prefix era, so an S9 might represent one of the final S-prefix builds or one of the very first instruments to move into the new system.

The S-to-E Transition

The S prefix did not end cleanly on December 31. Fender began using the E prefix for 1980s production, but factory transitions rarely happen overnight. Some late S9 serials may have been stamped on instruments that left the line in 1980 or very early 1981. If you are dating an S9 guitar, treat the serial as a starting point and confirm with neck stamps, pot codes, and body stamps.

Neck heel stamps and potentiometer date codes are especially useful for S9 guitars. A pot code from 1980 or 1981 on an S9 instrument suggests a late build that crossed into the early E-prefix window. Body stamps inside the neck pocket can narrow the window further. This is why the Fender serial number decoder gives a year range for some S-prefix entries rather than a single year.

Where to Find the Serial Number

On late-1970s Fenders, the number is usually in one of these places:

• Neck plate: The most common location for S-series USA guitars. Fender used chrome neck plates with the serial stamped across the middle.
• Back of the headstock: Less common on S-series USA guitars than on later models, but some do have the serial printed or stamped here.
• Neck heel: Removing the neck may reveal a date stamp or inspector mark that confirms the year.

If the serial is hard to read, angle a light across the stamp. A phone photo with the flash off often captures the detail better than the naked eye. Be careful not to clean the neck plate with abrasive material, because an over-polished plate can make the stamp harder to read and may reduce collector value.

How to Verify an S-Series Serial Number

A serial number is the starting point, not the final verdict. Verify it against the physical guitar.

Cross-Check the Decal

The front headstock decal should match the serial era. In the late 1970s, Fender used the classic spaghetti logo with a "Made in U.S.A." stamp below it on the standard line. Some reissue or special models carried different decals, but the vast majority of S-series guitars show the standard logo.

A mismatch is a red flag. An S-series guitar with a "Made in Japan" or "Crafted in Japan" decal is almost certainly not an original S-prefix instrument, because the S prefix was not used by Japanese factories. Trust the decal and country stamp over a seller's description if the two disagree.

Inspect the Hardware and Stamps

Original hardware helps confirm the year and originality. On a USA S-series Stratocaster, look for the bridge type, tuner brand, pickguard screw spacing, and whether the neck plate uses three or four bolts. Removing the neck lets you see date stamps, factory codes, or inspector marks. On USA guitars, a body date within a year or two of the serial year is normal. Pots often carry date codes that place the guitar in the correct window.

Run the Decoder

The Fender serial number decoder will read an S-series serial and return the most likely year and factory. It is the fastest sanity check, especially when comparing multiple guitars or shopping online.

Likely Models and Specs by S-Series Year

The S prefix does not tell you the model. Fender applied the same serial system across Stratocaster, Telecaster, Jazzmaster, Jaguar, Mustang, Precision Bass, and Jazz Bass.

S6 (1976)

S6 guitars are the first letter-prefix Fenders and the least common in the series. Common models include the Standard Stratocaster, Standard Telecaster, Precision Bass, and Jazz Bass. Because 1976 overlapped with the final six-digit serial range, S6 instruments are often grouped with late-1970s CBS guitars rather than treated as a separate era.

Typical specs for a 1976 USA Standard Stratocaster:

• Body: Alder or ash depending on finish
• Neck: Maple with maple or rosewood fingerboard
• Fretboard radius: 7.25 inches
• Frets: 21 vintage-style frets
• Pickups: Three Fender single-coils
• Bridge: Six-screw vintage-style tremolo

These guitars usually feel different from a modern Player Series or American Professional II. The necks are often slim, the finishes thicker, and the tremolo hardware lighter than on contemporary reissues.

S7 and S8 (1977–1978)

S7 and S8 represent peak late-CBS Fullerton production. Standard Stratocasters and Telecasters from these years are common on the used market, and they are popular with players who want vintage Fender tone without the pre-CBS price tag. Jazz Basses and Precision Basses from this period are also well regarded, especially for players who want a punchy, articulate 1970s bass sound.

By S7 and S8, Fender had largely standardised the three-bolt neck plate and tilt-adjustment system on many models. Collectors debate the tonal impact of the three-bolt design, but the practical reality is that a well-set-up S7 or S8 Stratocaster can play and sound excellent. Value depends heavily on originality and condition.

S9 (1979–1981)

S9 is the transition prefix. Most S9 guitars were built in 1979, but some late examples carried into 1980 and possibly 1981 as Fender moved toward the E-prefix format. If you are buying an S9, ask for photos of the neck plate, body stamps, and pots. Date codes on the pots are often the clearest way to confirm whether the guitar is a true 1979 build or a very early 1980s transition instrument.

Value: What Is an S-Series Fender Worth?

Pricing an S-series Fender without seeing it is difficult, but the main value drivers are consistent.

CBS-Era Fullerton Premium

All S-series guitars are CBS-era Fullerton instruments, which gives them a baseline desirability that later Corona guitars do not automatically share. Collectors know that these guitars were built at the original factory, and many buyers prefer the character of a late-1970s Fender to a 1980s or 1990s example. That said, CBS-era instruments are also criticised for some spec changes, so condition and originality matter more than the prefix alone.

Originality and Condition

Original finish, pickups, hardware, and electronics add the most value. Issues that reduce price include refinished or oversprayed body, changed pickups, replaced tuners, bridge, or pickguard, non-original neck plate or decal, and significant fret wear or neck issues. A guitar with one or two sensible upgrades is not ruined; it just needs to be priced as a player guitar rather than a collector piece.

Model and Color

Some S-series models command more than others. A clean Sunburst or Black Stratocaster from S8 will usually outsell a less popular finish or a Mustang from the same year. Rare colours, left-handed models, and original hardshell cases add meaningful premiums. Basses are typically valued below equivalent guitars, but clean Precision Bass and Jazz Bass examples from the late 1970s still trade strongly.

Condition Tiers

For a ballpark sense of where S-series guitars trade today:

• Project or parts guitar: the lowest tier, often bought for the neck or body alone
• Player-grade with wear and minor modifications: a solid daily instrument at a working-player price
• Clean and mostly original: the sweet spot for most buyers
• Mint or near-mint with case and paperwork: the top of the market for that year and model

Because prices move with the wider vintage market, the best current value check is to compare three to five live listings of the same year, model, and condition. For a more precise range, the Guitar Price Estimate tool returns market-based numbers for the exact year and model.

Setup and Maintenance for an S-Series Fender

A late-1970s Fender that has not been set up recently will almost certainly benefit from fresh work. Neck relief drifts, frets wear, and pickup heights shift over four decades. These guitars were built to standard Fender measurements, so the factory specs are well documented.

For a typical S-series Stratocaster, start with these general targets:

• Neck relief: roughly 0.010 inches at the 7th fret with the string held at the 1st and last frets
• Action at the 17th fret: about 4/64 inches on the high E and 5/64 inches on the low E
• Pickup height: around 6/64 inches from the bottom of the low-E string to the bridge pickup pole piece, and 5/64 inches on the high-E side

These are starting points, not rules. Measure, adjust in small steps, and let the neck settle overnight between truss-rod turns. For exact factory measurements by model and year, use the Setup Specs Lookup. For a printable one-page reference, the Fender Setup Guide collects the key specs onto a single card.

S-Series Serials vs Other Letter Prefixes

Once you understand the S prefix, the rest of Fender's letter-year system falls into place:

• S prefix: late 1970s (S6 through S9, roughly 1976–1981)
• E prefix: 1980s (E3 through E9)
• N prefix: early 1990s (N0 through N3, with N4–N9 later in the decade)
• Z prefix: 2000s (Z0 through Z9)
• US prefix: modern USA guitars with a two-digit year code
• MX, MZ, MN prefixes: Mexican production from the 1990s onward

If your serial does not fit the S pattern, the Fender serial number decoder will route it to the correct decade and factory.

Internal Links and Next Steps

• Fender Serial Number Lookup - Decode any Fender or Squier serial instantly
• Guitar Worth Calculator - Get a market range for your year and model
• Setup Specs Lookup - Find factory measurements by model and era
• Fender E-Series Serial Numbers - The 1980s follow-up to the S prefix
• Fender N-Series Serial Numbers - The 1990s follow-up to the E prefix
• Fender Z-Series Serial Numbers - Dating 2000s Fenders
• Fender MX-Series Serial Numbers - Mexican-made Fenders from the 1990s onward

FAQ

What year is an S9 Fender serial number?

An S9 Fender serial number was most likely made in 1979. Because the S-to-E transition happened gradually, some very late S9 guitars may have been completed in 1980 or early 1981. Confirm with pot codes and body stamps if the exact year matters.

Is an S-series Fender USA made?

Yes, essentially all genuine S-series Fenders are USA-made instruments built at the Fullerton, California factory. The S prefix was not used by Fender Japan, so an S-prefix serial with a "Made in Japan" decal is a mismatch and should be investigated carefully.

What does the S stand for in Fender serial numbers?

The letter S stands for the late 1970s in Fender's letter-year dating system. It was the first letter prefix Fender used, replacing the six-digit serial format. The digit after the S gives the specific year.

Are S-series Fenders good guitars?

Yes, S-series Fenders can be excellent guitars. They were built at the original Fullerton factory during the final years of CBS ownership. Quality varies by year and individual instrument, but a clean, original S-series Stratocaster, Telecaster, or Bass is a capable vintage instrument with strong collector appeal.

How do I know if my S-series Fender is original?

Check the neck plate stamp, headstock decal, hardware, and internal stamps. The decal should say "Made in U.S.A." The neck plate should match the era. Removing the neck may reveal date stamps that confirm the year. Run the serial through the Fender serial number decoder as a first check.

What models were made with S-series serial numbers?

Fender used the S prefix across most of its electric line. Common models include the Stratocaster, Telecaster, Jazzmaster, Jaguar, Mustang, Precision Bass, and Jazz Bass. All were built at the Fullerton factory.

Did CBS own Fender during the S-series years?

Yes. CBS owned Fender from 1965 until March 1985. Every S-series guitar was built under CBS ownership at the Fullerton factory, making these the last letter-prefix Fenders from the original CBS era.

How much is a late-1970s S-series Fender worth?

Value depends on model, originality, condition, and current vintage market demand. Clean, original S-series Stratocasters and Telecasters typically command the strongest prices, while basses and project-grade guitars trade lower. Use the Guitar Price Estimate tool and compare live listings for a current range.

Can a Fender have an S serial and be a reissue?

Genuine reissues with S-prefix serials are not common. Most S-series guitars are original production instruments from the late 1970s. If a seller calls an S-series guitar a reissue, ask for documentation and compare the decal and hardware to known original examples.

What should I do after I date my S-series Fender?

After you know the year and factory, verify originality, check the current market value, and give the guitar a proper setup. Use the Fender serial number decoder to confirm the date, the Guitar Price Estimate tool for pricing, and the Setup Specs Lookup or Fender Setup Guide for factory measurements.

Conclusion

Fender S-series serial numbers are the gateway to one of the most collectible eras in Fender history. Every S-prefix guitar was built at the original Fullerton factory under CBS ownership, and the series captures the final evolution of the company's 1970s electric line before the E-prefix system of the 1980s took over.

If you have an S-series Fender, start with the serial table above, check the neck plate and headstock decal to confirm originality, and inspect the hardware and stamps to narrow the build window. Then run the number through the Fender serial number decoder for a quick digital check, and use the Guitar Price Estimate tool if you are buying, selling, or insuring the guitar.

Once the guitar is dated and valued, the final step is making it play its best. A late-1970s Fender that has been properly set up can feel as good as any modern instrument. The Fender Setup Guide puts those specs on one printable page, so you can dial in action, relief, intonation, and pickup height without guessing.