Eastman Serial Number Lookup: Free Instant Decoder

Use our free Eastman guitar serial number lookup tool to decode your guitar instantly. Covers Eastman acoustic, electric, archtop, mandolin, and ukulele serial numbers from the 1990s to present. Find production year, factory, and country of origin.

What's Next?

Now that you've decoded your Eastman guitar, here are the best places to continue:

Eastman Serial Number Lookup: Decode Your Guitar Instantly

Eastman has earned a reputation as one of the most respected boutique-style guitar makers out of China, offering hand-voiced acoustics, vintage-inspired electrics, and beautifully carved archtops at surprisingly fair prices. Whether you own an AC series acoustic, a T series electric, or a faithful archtop, the Eastman serial number lookup tool above decodes your instrument in seconds. Enter your serial number and get production year, factory location, and country — all free, with no sign-up required.

Our decoder covers Eastman guitars from the 1990s to present, including acoustic, electric, archtop, mandolin, and ukulele serials. If you're buying used, authenticating a recent purchase, or simply curious about your guitar's history, read on for the complete guide. And if you're worried the deal is too good to be true, the free fake guitar quick-check runs the classic counterfeit tells — price, seller behaviour, serial, decals, workmanship — and returns an instant risk band in two minutes.

Acoustic Guitar Setup Cheat Sheet: Exact Specs That Work

Now that you've identified your Eastman, set it up to play its best. The Acoustic Setup Guide has exact specs for acoustic guitars — saddle height, neck relief, nut slots, and humidity management — in one printable reference.

Acoustic Guitar Setup Cheat Sheet: Exact Specs That Work

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Own another guitar? We also have free serial number decoders for Fender, Gibson, Squier, ESP, Schecter, Charvel, Epiphone, Gretsch, Ibanez, Jackson, Martin, PRS, Taylor, Takamine, Yamaha, Chapman, Guild, Harley Benton, Rickenbacker, Cort, and Seagull.

Eastman acoustic guitar

Part 1: Where Is My Eastman Serial Number?

Before you can use the Eastman serial number decoder, you need to find the number on your instrument.

  • Inside the soundhole (acoustics): The serial number is most commonly printed on the interior label, visible through the soundhole.
  • Back of the headstock (electrics and archtops): Many Eastman electrics and archtops have the serial stamped or printed on the back of the headstock.
  • Neck block: Some older or special-order models may have the serial on the neck block inside the body.
  • Certificate of authenticity: Higher-end Eastman models ship with paperwork that includes the serial number.

Pro tip: Use a flashlight and small mirror for acoustics. Eastman labels are typically white or cream with black text, and the serial is clearly marked near the model name.

Part 2: Letter Prefix Format (2020+)

Starting around 2020, Eastman moved to a letter-prefix system that makes dating quick and easy. The format is:

PatternMeaning
PrefixProduct line
YY2-digit year (actual)
######Production sequence

Product Line Prefixes

PrefixInstrument Line
MAcoustic guitar
EElectric guitar
DArchtop guitar
UUkulele
MAMandolin

Worked Examples

  • M2005121: M = Acoustic, 20 = 2020, sequence 05121 → 2020 Eastman acoustic, Zhu Hai, China
  • E2212345: E = Electric, 22 = 2022, sequence 12345 → 2022 Eastman electric, Zhu Hai, China
  • U21001: U = Ukulele, 21 = 2021, sequence 001 → 2021 Eastman ukulele, Zhu Hai, China
  • D230001: D = Archtop, 23 = 2023, sequence 0001 → 2023 Eastman archtop, Zhu Hai, China

This format is the most reliable Eastman has used, giving an exact year and product line at a glance.

Part 3: 8-Digit Format (2014-2019)

Eastman used an 8-digit numeric format during the mid-2010s. Two overlapping interpretations exist in this window, so the decoder tests both.

2014-2016 Variation: D1 D2 D3 D4 + sequence

PositionMeaning
D1 + D4Year (2 digits)
D2 + D3Month (01-12)
Digits 5-8Production sequence

Example: 14651234 → D1=1, D4=4 gives year 14 (2014); D2=4, D3=6 gives month 46 — invalid, so this particular serial does not fit the 2014-2016 pattern cleanly. The decoder evaluates both variations and returns the plausible match.

2016-2019 Variation: D1 D2 D3 + sequence

PositionMeaning
D1 + D3Year (2 digits)
D2Month (single digit)
Digits 4-8Production sequence

Example: 18601234 → D1=1, D3=6 gives year 16 (2016); D2=8 gives month 8 (August) → August 2016, Zhu Hai, China

Because these two variations overlap, very short production runs or unusual sequences may require contact with Eastman for confirmation. The decoder returns the most mathematically consistent result.

Part 4: Pre-2014 Sequential Numbers

Before 2014, Eastman used simple sequential numbering without an embedded date code. A serial like 12645 is valid, but it only tells you the guitar was built before the dated formats began.

If you have a pre-2014 Eastman, the best way to determine the exact year is to:

  1. Note the serial number and model name.
  2. Contact Eastman customer service or an authorized dealer with the serial.
  3. Cross-reference cosmetic and hardware details with known catalogs from the era.

Early Eastman guitars are less common, so precise dating can add meaningful context for resale or insurance purposes.

Part 5: Eastman Factory Locations

Zhu Hai, China — The Primary Factory

Virtually all Eastman guitars are built in Zhu Hai, China. The company was founded in Beijing in 1992 by Qian Ni and moved production to Zhu Hai as it scaled. The factory combines traditional hand-work — particularly for tops, bracing, and archtop carving — with modern tooling for consistency.

Eastman is unusual among Chinese guitar makers for its emphasis on old-world construction techniques, including hand-scalloped bracing on many acoustics and nitrocellulose lacquer finishes on higher-end models.

Part 6: Era-by-Era Changes

1990s: Founding and Early Production

  • Serials: Simple sequential numbers
  • Key Models: Early archtops and classical guitars
  • Production: Very small batches, hand-built in Beijing
  • Notable: Eastman began by supplying archtop parts and instruments to the international market

2000s: Acoustic and Mandolin Expansion

  • Serials: Sequential numbering continued
  • Key Models: AC series acoustics, MD series mandolins
  • Production: ~5,000-10,000 instruments per year
  • Notable: Reputation grew for all-solid-wood acoustics at mid-range prices

2010s: Dated Serial Formats Begin

  • Serials: 8-digit numeric format (2014-2019)
  • Key Models: AC322, AC422, E series electrics, archtop AR series
  • Production: ~10,000-20,000 instruments per year
  • Notable: Product line diversifies into electric guitars and ukuleles

2020s: Modern Letter-Prefix System

  • Serials: Letter prefix + YY + sequence
  • Key Models: AC series, SB series, T series electrics, U series ukuleles, MA mandolins
  • Production: ~20,000-30,000 instruments per year
  • Notable: Clear product-line identification and exact dating

Summary: Quick Reference Table

FormatPatternEraExample
Letter prefixPrefix + YY + ######2020+M2005121 = 2020 Acoustic
8-digit (Variation A)D1D2D3D4 + XXXX2014-201614651234
8-digit (Variation B)D1D2D3 + XXXXX2016-201918601234 = Aug 2016
Sequential3-7 digitsPre-201412645
Acoustic Guitar Setup Cheat Sheet: Exact Specs That WorkOnce you've dated your Eastman, the next step is dialing in the right setup. Acoustic setup specs vary by body style and string gauge — our Acoustic Setup Guide covers Eastman-friendly measurements, saddle sanding ratios, and seasonal maintenance. Acoustic Guitar Setup Cheat Sheet: Exact Specs That Work ($19 — save 24%)

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