Harmony Serial Numbers & What They Mean

Harmony Standard Series guitars have handwritten or hard-stamped serial numbers that follow similar formats. Here’s a quick way to determine the age of your guitar:

Handwritten serial numbers

Format:
0 (Identifier) YY (Year) XXXX (Numerical ID)

Example:
Serial number 0191456
= Harmony Standard Series guitar built in 2019

Hard-stamped serial number
s

Format:
2 (Identifier) 
 YY (Year) 
 XXXX (Numerical ID)

Example:
Serial number 2211456

= Harmony Standard Series guitar built in 2021