Korg M1 Serial Number Link Jun 2026

A valid serial number sticker proves the instrument is a genuine factory build and helps identify units that may have been cobbled together from spare parts.

Serial numbers ranging roughly from 000001 to 060000 . These units feature the earliest firmware versions (such as v1) and occasionally feature slight differences in the internal internal backup battery placement.

For more specific info on Korg repair, check out this guide to replacing switches. To see an overview of the M1's features, view this tutorial video . If you'd like, let me know: The of your serial number If it has an "M1" or "M1R" logo The Korg M1 Plugin Tutorial: An Overview of the M1 Korg M1 Serial Number

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.

Unlike modern manufacturers who use alphanumeric codes containing explicit date formulas (like year/week characters), Korg utilized a for the M1. Sequential Numbering System A valid serial number sticker proves the instrument

How to date this: There is no official public registry, but user-contributed data on forums like Gearspace and r/SynthCollectors has reverse-engineered the timeline:

An authentic factory M1EX or M1REX with the correct stamped serial number is significantly more valuable than a standard M1R that has been user-upgraded, even if the functionality is similar. For more specific info on Korg repair, check

Limitations and caveats

These units (produced late 1989 to early 1990) represent the "sweet spot."

The first 100,000 units were produced by November 1990. If your serial number is below 100,000 , it is a very early, highly sought-after model.