This is a challenging request because Koken Barber Supply Company did not publish a single, public "master list" linking specific serial numbers to exact manufacturing dates. They were a private company with proprietary records, and many of those historical records were lost or discarded over time.

  • Late Models (1940-1960): Serial numbers 30,001-50,000 (approx.)

    The Best Resources for Verifying Your Koken Serial Number

    Since a master list doesn't exist digitally, here is where you actually go to verify your chair:

    Do you have a serial number that doesn't match this list? Photograph it and email the moderators of the Vintage Barber Chair subreddit or the Koken Collectors Facebook group. You might help expand the list for the next generation of barbers.

    Tips for Restoration

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

    Vintage Koken Barber Chair Serial Number Report

    Peak Art Deco styling; porcelain bases (rare colors like pale yellow). 125,001 – 175,000 c. 1936 – 1945 Simplified designs due to material constraints of the era. 175,001 – 225,000 c. 1946 – 1955