Korg M1 Serial Number -

The serial number is typically found on a black sticker located on the rear panel of the synthesizer, near the audio and MIDI connectors.

Using the key production milestone we know (serial #100,000 in November 1990), you can estimate your M1's production date. The table below provides a general guideline for estimating the production period of your Korg M1 based on its serial number range.

Many M1s have a serial number starting with a zero (e.g., 008765 ). This is not a 5-digit number. Korg used a fixed width in their database. 008765 is simply serial number 8765 — an extremely early unit, likely manufactured in late 1987 or January 1988. Do not ignore the leading zeros. Korg M1 Serial Number

Counterfeit Korg M1s do not exist. The custom PCM chips and physical keybed components were too complex and expensive to replicate in the late '80s.

Before finalizing a purchase or evaluating your own Korg M1, document the following details alongside the serial number: The serial number is typically found on a

The sticker almost always begins with the model identifier “M1” followed by the number. However, there are important variations for different models in the M1 family:

I can provide custom advice or troubleshooting steps based on your machine's age. Many M1s have a serial number starting with a zero (e

The serial number can be an unexpected hero when you need to restore your Korg M1 to its original factory state.

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

The serial number can also hint at earlier, more subtle variations in the M1’s run. For example, some online discussions have pointed out a physical detail: units with serial numbers below 002100 (and often as high as 005560) featured smaller, more modest lettering on the back panel compared to later models.

When shopping for a vintage Korg M1, use this quick checklist regarding the serial number and hardware: