Hi, I’m helping my grandma date and eventually sell her Koken barber chair that has been passed down in her family. Unfortunately I wasn’t able to find a serial number on the bottom of the seat or on the framework. The leather upholstery is in great condition with no rips, original paper in the headrest is there and intact, working hydraulic lift, and has minimal rust spots. I believe it is from the 1920’s but want to get an accurate age and value for it. Any help is greatly appreciated! I have pictures as well if that would be helpful.

The serial numbers I have been able to find are:

Bottom of the chair frame: 307-0
Bottom of the footrest: 25-B