Dating a vintage Koken barber chair is a blend of locating a physical serial number and analyzing mechanical "generational" markers. While no single public master list exists from the original factory, collectors and appraisers use the following recognized ranges to estimate production years. Koken Serial Number Chronology
Use these approximate ranges to narrow down your chair’s age: Serial Number Range Estimated Era Key Mechanical Evolution 1,000 – 9,999 c. 1885 – 1888 Early swiveling and reclining models. 10,000 – 25,000 c. 1895 – 1905 Very early hydraulic models; often wood frames. 25,001 – 50,000 c. 1906 – 1915 Transition to "Congress" line; solid oak/walnut bases. 50,001 – 85,000 c. 1916 – 1925 High-ornamentation era with extensive cast iron scrollwork. 85,001 – 125,000 c. 1926 – 1935 Rise of Art Deco aesthetics and heavy porcelain finishes. 125,001 – 175,000 c. 1936 – 1945 Streamlined designs; beginning of minimalist aesthetic. 175,001 – 225,000 c. 1946 – 1955 Post-war production; more chrome, less wood. 225,001 and higher c. 1956 – 1960s
Mid-century styles; final years of independent Koken production. Where to Find the Number
If you cannot find the serial number, check these three common locations:
Under the Seat Cushion: The most frequent spot. It is typically stamped into the metal frame or the underside of the wood.
The Pedestal Base: Look near the bottom edge of the vertical column, where it meets the floor plate.
Underside of Footrest: Flip the footrest up; some models have a sequence stamped on the back plate.
Important Note on Casting Numbers: You may find numbers like "52CB" or "505KO". These are not serial numbers; they are "casting numbers" or part identifiers used for the manufacturing molds. A true serial number is usually a longer, 4- to 6-digit sequence stamped into the metal rather than raised in relief. Dating by Visual Clues
Pre-1892: These chairs generally lack a hydraulic lift system (the lever won't pump them up) and rely only on mechanical recline.
1892 Onward: The introduction of the patented hydraulic lift system revolutionized the brand. Most chairs with a working pump are post-1892.
Materials: Victorian-era chairs (late 1800s) often feature ornate wood carvings (oak/walnut). 1920s chairs shifted to heavy porcelain, while 1950s models utilized more chrome and vinyl.
Do you have a specific serial number or a photo of the footrest? This can help narrow down the exact model series, such as the famous Congress or Professional lines. Determine Koken Chair Age by Serial Number - Expert Guide
Dating a vintage Koken barber chair requires cross-referencing its stamped serial number 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
While exact year-by-year factory records are rare, experts and collectors use the following approximate ranges to date Koken chairs: Serial Number Range Estimated Production Era Key Design Characteristics 10,000 – 25,000 c. 1895 – 1905 vintage koken barber chair serial number list
Very early hydraulic models; often four-leg solid oak construction. 25,001 – 50,000 c. 1906 – 1915
Introduction of standardized "Congress" models; more ornate ironwork. 50,001 – 85,000 c. 1916 – 1925
Transition to more streamlined metal components; early Art Deco influence. 85,001 – 125,000 c. 1926 – 1935
Peak Art Deco styling; porcelain bases (rare colors like pale yellow). 125,001 – 175,000 c. 1936 – 1945 Simplified designs due to material constraints of the era. 175,001 – 225,000 c. 1946 – 1955
Post-war production; more functional, less ornate chrome and leather. 225,001 and higher c. 1956 – 1960s
Late-stage Koken before the 1969 Takara-Belmont acquisition. How to Locate and Identify Your Serial Number
Primary Location: Look for a stamped number on the underside of the seat frame or on the iron base casting. You may need to lift the seat cushion or flip the chair to see it clearly.
Secondary Marks: You may also find "casting numbers" (e.g., 52CB or 1174). These are generally part numbers or model identifiers rather than unique serial sequences, though they can still help identify the model via period catalogs.
Model Indicators: Koken's name is usually prominently cast into the footrest. Value and Authenticity
The value of a Koken chair is heavily influenced by the working condition of its hydraulic lift and the rarity of its materials (e.g., quarter-sawn oak, original tufted leather).
Restored Condition: Professional-grade restorations can range from $2,000 to over $12,000 depending on the model's rarity.
As-Is Condition: Unrestored chairs with rust or upholstery issues often sell for under $500. Determine Koken Chair Age by Serial Number - Expert Guide
Since no master list exists, use these proven methods (tested by collectors): Dating a vintage Koken barber chair is a
Decode the serial plate format
Identify the base and footrest
Check the hydraulic pump cover shape
Cross-reference with catalogs (available via vintage barber supply forums).
Koken (Koken Manufacturing Co., St. Louis, MO) did not maintain a fully public, linear date-to-serial-number list like an automobile manufacturer. However, based on factory records, patent dates, and collector crowdsourced data, approximate dating is possible.
Founded in 1902 by Charles Koken, the company revolutionized the industry by introducing the hydraulic lift mechanism. Before Koken, barber chairs were often clumsy and manually cranked. Koken brought luxury, durability, and engineering prowess to the barbershop. Because they were built like tanks, thousands survive today, but identifying the exact year of manufacture requires some detective work.
Before you search for a list, you must find the number. On a vintage Koken barber chair, look in these three places (in order of likelihood):
Warning: Do not confuse patent dates with serial numbers. Many Koken chairs have a patent date stamped on them (e.g., PAT. JAN 5, 1892). That is the date the mechanism was patented, not the date your chair was built.
When you find a serial number:
To identify the age of a vintage Koken barber chair, collectors typically use serial number ranges
stamped on the frame. While exact factory records for every year are scarce, serial numbers (usually 4–6 digits) provide a reliable ballpark for production eras. JustAnswer Koken Serial Number & Dating Chart
The following serial number ranges are approximate estimates used by appraisers to date Koken chairs: 1 – 999:
c. 1881 (Earliest models with Ernest Koken's first reclining patents). 1,000 – 9,999: How to Date Your Koken Chair Without a
c. 1885 – 1888 (Introduction of swiveling and reclining features). 10,000 – 25,000: c. 1895 – 1905 (Very early hydraulic models). 25,001 – 50,000: c. 1906 – 1915. 50,001 – 85,000: c. 1916 – 1925. 85,001 – 125,000: c. 1926 – 1935 (Often featuring Art Deco styling). 125,001 – 175,000: c. 1936 – 1945. 175,001 – 225,000: c. 1946 – 1955 (Postwar production). 225,001 and higher: c. 1956 – 1960s (Later mid-century designs). JustAnswer How to Find Your Serial Number
The number is typically stamped directly into the hardware rather than being on a removable tag: Under the seat: Look on the underside of the wood or the metal seat frame. On the base:
Check the cast iron base plate or the frame's metal casting. Occasionally, you may find "casting numbers" (e.g.,
) on the footrest, but these are often part numbers rather than unique serials JustAnswer Key Dating Features
If the serial number is illegible, you can narrow the age using specific design features: Hydraulics:
Chairs without hydraulic systems (which must be spun to raise/lower) almost always date before 1892. A-Prefix Serials:
Some later models feature an "A" prefix (e.g., A206701), which often indicates production from the 1930s or later. Materials:
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
in St. Louis holds an archive of Koken catalogs from 1887 through 1958. or calculating the estimated value based on its current condition? Koken Barber Chair Age and Appraisal Guide: 1930 Model 18 Feb 2014 —
If you own a vintage Koken, do not rely on memory. Write down the serial number and stamp it into a piece of metal or wood attached to the chair's underside.
If you have ever run your fingers along the cast iron base of a vintage Koken barber chair, you have touched a piece of American industrial history. For over a century, the Koken Manufacturing Company—officially known as the Koken Barber Supply Co. (St. Louis, Missouri)—was the undisputed king of the barber chair. Their chairs were the Rolls Royces of the trade: heavy, hydraulic, and built to last several lifetimes.
Today, collectors, restoration experts, and vintage barbershops are on a constant hunt for these chairs. The single most common question asked in forums, Facebook groups, and antique stores is: “Where can I find a vintage Koken barber chair serial number list to date my chair?”
This article serves as the definitive resource on that topic. We will explore the reality of Koken’s serial number system, provide a practical guide to dating your chair without an official list, and explain why a complete “master list” likely does not exist.