Since no master list exists, use these (tested by collectors):
: Chairs without a hydraulic lift system almost certainly date to before 1892 , when Ernest Koken patented the hydraulic lift. vintage koken barber chair serial number list
If your chair has no serial number, do not panic. You can date a Koken chair by its physical features. Since no master list exists, use these (tested
This legacy of quality and innovation has cemented Koken's place in history. In the late 1950s, the company was acquired by the Takara Belmont Corporation, which continues the Koken brand today. However, for collectors and enthusiasts, it is the vintage Koken chairs from the late 19th to the mid-20th century that are most prized. Since no master list exists
Mid-Century modern styles; leading into the Takara Belmont buyout. Where to Find the Serial Number