This article serves as the definitive resource on that topic. We will explore the reality of Koken’s serial number system, provide a practical guide to dating your chair without an official list, and explain why a complete “master list” likely does not exist.

Once you’ve identified your chair using the serial number list logic, keep these restoration tips in mind:

Finding a comprehensive, sequential serial number list for vintage Koken barber chairs is famously difficult because many official factory records were lost after the company’s bankruptcy in the 1950s. However, historians and collectors use specific stamped ranges patent dates found on the chair to reconstruct its story JustAnswer How to Find Your Chair's ID Serial Number vs. Casting Code Serial Numbers 4 to 6 digits long (sometimes with a letter prefix like "A") and into the metal. Casting/Model Codes : Short alphanumeric codes (like ) that are molded in relief