Koken chairs are rarely marked on the outside. To find the serial number, you often need to look in less accessible areas. The most common locations include:
Some later models feature an "A" prefix (e.g., A206701), which often indicates production from the 1930s or later. Materials:
Specialized antique barber chair dealers often maintain their own lists of parts based on these serial ranges.
Finding a serial number on a Koken chair requires checking specific locations, as the placement shifted based on the manufacturing decade. vintage koken barber chair serial number list
Here is a general timeline to help you estimate the age of your chair based on serial ranges and features:
This list provides ballpark production years based on known serial number ranges: Serial Number Range Approximate Date Notable Features / Eras c. 1881 Earliest patented reclining chairs. 1,000 – 9,999 c. 1885 – 1888 Introduction of swiveling and reclining patents. 10,000 – 25,000 c. 1895 – 1905 Very early hydraulic models; often wood-heavy. 25,001 – 50,000 c. 1906 – 1915 Expansion of hydraulic designs. 50,001 – 85,000 c. 1916 – 1925 Standardized hydraulic and ornate cast iron era. 85,001 – 125,000 c. 1926 – 1935 Rise of Art Deco styling and porcelain finishes. 125,001 – 175,000 c. 1936 – 1945 Later hydraulic models; war-era production. 175,001 – 225,000 c. 1946 – 1955 Post-war production; mid-century modern shifts. 225,001+ c. 1956 – 1960s Final production years. Where to Find the Numbers
Post-war styling; "President" series and highly polished chrome work; mid-century aesthetic. Cross-Referencing Physical Details to Verify the Age Koken chairs are rarely marked on the outside
These are usually stamped or engraved directly into smooth metal surfaces after the piece was cast. They are unique to the specific production run. Patent Dates
For professional verification, you can consult specialized appraisers on platforms like JustAnswer or browse archival catalogs at the Missouri History Museum, which holds Koken records from 1887–1958. Determine Koken Chair Age by Serial Number - Expert Guide
I was unable to locate a single, comprehensive, or official “vintage Koken barber chair serial number list” that you can simply download or search by number. Here’s an honest review of what actually exists and how to work with Koken serial numbers. 1881 Earliest patented reclining chairs
A common mistake among vintage chair owners is confusing a with a serial number .
These are usually stamped roughly into the metal, look slightly uneven (hand-stamped), and do not match the clean, raised lettering of the patent cast. A unique serial number identifies that specific unit on the factory line. Step-by-Step Identification Checklist
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