Vintage models from specific Japanese factories command much higher prices.

Any or label colors (e.g., FG-180, Red Label, Pacifica 112) visible on the guitar? Share public link

5 to 6 digits (e.g., 20345 or 101234 ) The Best Logic: Early Yamahas (FG-150, FG-180, FG-200) used sequential numbering. No month, no year code.

Here are examples to illustrate how this plays out in different serial number systems:

：150年以上の歴史を持つヤマハは、日本国内（浜松工場など）だけでなく、台湾、インドネシア、中国、韓国など、時代ごとに生産拠点を世界中へ拡大・移行してきました。

By following this guide, you stop guessing and start knowing. You will discover exactly when your guitar was born, which luthier likely assembled it, and—most importantly—its true place in Yamaha’s legendary history.

Since automated databases fail, here is the manual logic used by expert luthiers. Identify your era, then apply the formula.

Widely used for Japanese (MIJ) and Taiwanese models, looking like .

Compare the headstock number to the internal label number. If they don't match? The guitar might be a "parts-caster" or a counterfeit.

Yamaha has produced some of the world’s most reliable, beautifully crafted, and popular guitars since the 1940s. Whether you just picked up a vintage FG-180 Red Label at a thrift shop or want to verify the authenticity of a used acoustic or electric, checking the serial number is the best way to uncover its history.

This is the most widespread system used across Taiwanese, Indonesian, and Indonesian factories for modern instruments. LLNNNNNN (2 Letters, 6 Numbers) or HINNNNNN How to Decode: First Letter: Represents the Year of manufacture. Second Letter: Represents the Month of manufacture. First Two Digits: Represent the Day of the month.

Do not confuse the "Model number" with the "Serial number." A red label inside an acoustic says "FG-180" (model). You need the stamped number.