Dating a vintage Koken barber chair requires cross-referencing its stamped serial number with historical production ranges and evolving design features, such as the famous hydraulic lift patented in 1892. Because Koken was the premier manufacturer of its era, serial numbers (typically 4–6 digits) were logged sequentially and remain the most reliable indicator of age. Koken Serial Number & Date Reference Chart
Vintage Koken Barber Chair Serial Number List: A Collector's Guide
The Iron Base: Look for a small, flat area on the cast iron base plate or near the rotation mechanism where a series of digits may be stamped. vintage koken barber chair serial number list
Dating a vintage Koken barber chair is a blend of locating a physical serial number and analyzing mechanical "generational" markers. While no single public master list exists from the original factory, collectors and appraisers use the following recognized ranges to estimate production years. Koken Serial Number Chronology
Why? Unlike firearm manufacturers who kept meticulous, surviving logs for liability reasons, Koken was a supply company. While they stamped serial numbers on their chairs (usually on the hydraulic pump housing or the base plate), the original factory ledgers have been lost, destroyed, or are locked in private collections that have not been digitized. Dating a vintage Koken barber chair is a
Underside of the Seat: The most common location is stamped on the wood or iron frame beneath the seat cushion.
: Look for a stamped number on the flat part of the base plate. Hydraulic reservoir less ornate chrome and leather.
The Base Casting: Check the iron base or the frame near the hydraulic mechanism for stamped digits.
Post-war production; more functional, less ornate chrome and leather. 225,001 and higher c. 1956 – 1960s