But for collectors, restorers, and resellers, the is more than just a string of digits on a sticker. It is the keyboard’s DNA. It tells you when it was built, where it was shipped, which hardware revision you have, and ultimately, how much it is worth.

: Collectors often look for early-run units or those in pristine condition with clear identifiers.

Unfortunately, Korg Japan has never released an official decoder, so letter prefixes remain a “best guess” for enthusiasts.

Look for a small black sticker on the rear metal chassis.

A serial number is a unique identifier assigned to each Korg M1 synthesizer during the manufacturing process. It's a combination of letters and numbers that provides a specific code for your instrument, allowing Korg to track its production, sales, and maintenance history. The Korg M1 serial number is usually printed on a sticker or engraved on the instrument's chassis, and it's an essential piece of information for owners, collectors, and repair services.