Yamaha Guitars Serial Number Lookup & Dating Guide
Verify authenticity, decode production year, and look up factory specifications for Yamaha Guitars guitars.
10-Second Yamaha Guitars Dating Rules of Thumb
Taiwan Kaohsiung 8-Digit Formula (1971–2001)
The first digit represents the year of the decade (e.g. 2 = 1972, 1982, or 1992). Digits 2 & 3 indicate month; digits 4 & 5 indicate day.
Modern Letter-Code System (2000–Present)
First letter represents year (H=1, I=2, J=3, K=4, L=5, M=6, N=7, O=8, P=9, Q=0). Second letter represents month (H=Jan..P=Sep, X=Oct, Y=Nov, Z=Dec).
Vintage Nippon Gakki Red Label (1966–1972)
6-7 digits stamped into the interior neck block of Hamamatsu-built FG-180 and FG-150 acoustics. First digit indicates Japanese Showa emperor year (8=1968, 9=1969, 0=1970, 1=1971).
Indonesian Revstar & Pacifica Inspection
Modern Indonesian Pacificas and Revstars have clean laser-printed serial numbers on the reverse of the headstock with "Crafted in Indonesia".
Where to Find the Serial Number on a Yamaha Guitars Guitar
Printed or pressed on the rear of the headstock between or below the tuning pegs.
Look through the soundhole towards the neck joint. Vintage and modern Yamaha acoustics have the serial stamped into the wood block.
Yamaha Guitars Serial Number Formats & Historical Dating Cheat-Sheet
| Production Era | Serial Format | Decoding Rule / Meaning | Example |
|---|---|---|---|
| Modern Letter-Code System (2000–Present) | Letter (Year) + Letter/Digit (Month) + Day (2 digits) + Sequence (e.g. IQN15042) | Year letters: H=1, I=2, J=3, K=4, L=5, M=6, N=7, O=8, P=9, Q=0 (e.g. I=2022/2012/2002). Month letters: H=Jan..P=Sep, X=Oct, Y=Nov, Z=Dec. | IQN15042 -> Manufactured at Hangzhou/Indonesia Facility |
| Taiwan Kaohsiung Era (1971–2001) | 8-Digit Numeric: YMMDDXXX (e.g. 20415123) | First digit is the decade year (2=1972/1982/1992), followed by 2 digits for month and 2 digits for day. | 20415123 -> Taiwan Kaohsiung (April 15th, 1982/1992) |
| Vintage "Red Label" Nippon Gakki (1966–1972) | 6-7 Digits stamped on neck block (e.g. 845678, 1045678) | Iconic original FG-180 / FG-150 / FG-140 acoustics made in Hamamatsu, Japan. First digit reflects Showa year (8=1968, 1=1971). | 845678 -> Nippon Gakki Japan (1968) |
Yamaha Guitars Hardware Verification & Anti-Counterfeit Audit
3-Step Physical Inspection & Anti-Counterfeit Checklist
On vintage 1968–1974 Nippon Gakki "Red Label" acoustics (FG-180, FG-140, FG-300), lay a 24-inch straightedge down the frets toward the bridge. The edge must rest flush with the top of the wooden bridge. If it falls below the bridge wood, the guitar requires a neck reset. Because vintage Yamaha used permanent marine epoxy ("Asian Mystery Glue") rather than hide glue, resets require 8–10 hours of high-risk luthiery costing $400–$600—often exceeding the guitar value.
Revstar Gen 2 (RSS20 / RSP20, 2022+) features acoustic chambering, dual carbon-fiber neck reinforcement rods, jumbo stainless steel frets, and a passive step-up Focus Switch. Older Gen 1 (RS series, 2015–2021) were non-chambered, significantly heavier (~9+ lbs), and used standard nickel-silver frets. Confirm you are not paying Gen 2 prices for a Gen 1 guitar.
For Red Label (FG3 vs FG5) and Revstar (RSS20 vs RSP20): verify the rear headstock stamp. Japanese models feature "Made in Japan" with genuine bone nut/saddle and wooden appointments; Indonesian models state "Made in Indonesia" and feature synthetic urea/graphtech appointments.
of secondary market buyers report zero structural neck or fretwork defects upon receipt—the highest out-of-the-box reliability rating across all major mass-market manufacturers.
Made-in-Japan Yamaha instruments (Revstar Professional RSP20, FG5 Red Label, and SG1820) command a 2.35x price premium over Indonesian production counterparts on Reverb.
of pre-1974 vintage "Red Label" FG-180 / FG-150 acoustics on secondary markets exhibit sagging neck angles, requiring $300-$500 neck resets due to indestructible epoxy neck joints.
Player Choice: Yamaha Revstar II Standard (RSS20, Chambered, Carbon Neck) vs Fender Player II Stratocaster
Community Verdict: 64.2% of intermediate-to-pro gigging players choose the Revstar II Standard for unmatched hardware appointments (carbon neck, stainless frets, chambering) at the sub-$900 price point over the traditional Fender Player II.
Frequently Asked Questions: Dating & Authenticating Yamaha Guitars
How do I search my Yamaha guitar serial number?
For acoustics, look inside the soundhole onto the neck block or interior center back brace. For electrics (Pacifica, Revstar), check the back of the headstock. Enter the letters and numbers into our free Yamaha lookup tool above to determine exact age, factory origin, and production series.
Where is the serial number located on a Yamaha acoustic guitar?
On Yamaha acoustic guitars (FG, FS, L-Series), the serial number is stamped directly into the interior wooden neck heel block visible through the soundhole, or printed on the internal center brace label.
Why are Yamaha Red Label guitars so sought after?
Nippon Gakki "Red Label" FG-180 and FG-150 guitars built in Japan from 1966 to 1972 are renowned for punchy dreadnought volume and vintage acoustic resonance matching vintage Martins costing 5x more.
Where are Yamaha Revstar and Pacifica guitars made?
Standard Revstar (RSS20) and Pacifica 611/112 models are built at Yamaha's state-of-the-art facility in Indonesia, while the flagship Revstar Professional (RSP20) is handcrafted in Hamamatsu, Japan.
Explore Yamaha Guitars Market Prices & Buying Advice
Knowing your guitar's build year is the first step in determining its resale value. Read our comprehensive 2026 buying guide and valuation tables to see current market trends for Yamaha Guitars.
Related Brand Serial Decoders & Dating Archives
Explore companion archives across our 20-brand guitar dating network.