Transition toward porcelain enamel frames and highly ornate nickel or chrome plating. c. 1926 – 1935
If the serial number has faded, rusted over, or been painted over during a past restoration, you can still estimate the timeline using physical design traits. 1. Wood vs. Porcelain (Material Indicators)
Early chairs often feature quarter-sawn oak, walnut, and elaborate wood carvings. By the 1940s and 50s, designs shifted toward more porcelain and chrome with less decorative wood. JustAnswer For more precise research, the Missouri History Museum
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:
Early 20th-century models occasionally featured paper or brass inventory tags beneath the seat frame, though most have worn away. Decoding Koken Identification Marks vintage koken barber chair serial number list
Dating a vintage Koken barber chair requires cross-referencing its 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
Later or refurbished models sometimes feature letter prefixes, such as A206701, which can indicate models from the 1930s or later. Where to Find the Serial Number
Chairs from this era began to lose the heavy Victorian ornamentation in favor of streamlined, Art Deco designs.
| Serial Number Range | Estimated Era | Key Features | |--------------------|---------------|----------------| | 1000 – 5000 | 1895–1905 | Hand-crank only, oak/iron frame, no hydraulics | | 5001 – 15000 | 1906–1915 | Early hydraulic pump base, smooth upholstery | | 15001 – 40000 | 1916–1929 | Art Deco cast feet, tufted backrest | | 40001 – 80000 | 1930–1941 | Streamlined design, chrome accents | | 80001 – 120000 | 1945–1954 | Full enamel/chrome, hydraulic foot pump | | 120001 – 170000 | 1955–1965 | Reclining mechanism, larger headrest | | 170001+ | 1966–1972 | Late models, often exported | Transition toward porcelain enamel frames and highly ornate
This database is the heart of your research. It is a compilation of actual serial numbers observed on vintage Koken barber chairs, cross-referenced with their estimated manufacturing date or known model information. Use this list to find numbers that are close to yours, giving you a powerful clue to your own chair’s age.
Note if the handle mechanics match the era of the base.
If you cannot find the serial number, check these three common locations:
Post-war prosperity brought modern materials and streamlined silhouettes. Some chairs began featuring vinyl upholstery instead of leather. This era includes chairs produced just before and just after Koken was acquired by Takara Belmont. By the 1940s and 50s, designs shifted toward
: Built primarily out of ornate, hand-carved hardwoods like quarter-sawn oak, walnut, or cherry.
| Feature | Introduced | Discontinued | |---------|-------------|----------------| | Hand-crank elevation | 1890 | ~1910 | | Hydraulic foot pump | 1905 | 1970+ | | Porcelain armrests | 1912 | 1940 | | Tufted upholstery | 1915 | 1950 | | Chrome plating (trim) | 1928 | 1965 | | One-piece streamlined back | 1935 | 1960 | | Foam cushion (no tufting) | 1952 | 1968 |
: Many models have numbers molded directly into the cast iron of the base or near the hydraulic pump.
Early models often featured mahogany or walnut wood armrests, while later ones might have white porcelain or metal armrests.
Koken barber chairs are arguably some of the most iconic, durable, and highly sought-after pieces of Americana in the collecting world. Founded by Ernest Koken in the late 19th century, the Koken Barbers' Supply Company in St. Louis, Missouri, pioneered the hydraulic barber chair, transforming a functional tool into a luxurious experience.