Before you can date your chair, you must locate the stamped identifier. Koken typically placed these numbers in consistent locations:
: Be careful not to confuse casting numbers (e.g., "52CB") with serial numbers . Casting numbers are part identifiers used during manufacturing and are shared by all chairs of that specific model, whereas serial numbers are unique sequential identifiers. Koken Barber Chair Timeline & Serial Ranges vintage koken barber chair serial number list
Based on patent records and historical catalog data, you can approximate the age of your chair using the following ranges: Koken Barber Chair Age and Appraisal Guide: 1930 Model Before you can date your chair, you must
: This is the most common location. You may need to remove the seat cushion or flip the chair carefully to find a stamped number on the wood frame or the metal base plate. Koken Barber Chair Timeline & Serial Ranges Based