Vintage Koken Barber Chair Serial Number List Jun 2026

While not exact to the specific year, these sequential ranges provide a reliable ballpark for dating your chair based on surviving records: Serial Number Range Estimated Production Era Key Era Characteristic c. 1881 – 1884 Earliest reclining models (non-hydraulic) 1,000 – 9,999 c. 1885 – 1891 Swiveling/reclining manual chairs 10,000 – 25,000 c. 1895 – 1905 Early hydraulic models; ornate iron 25,001 – 50,000 c. 1906 – 1915 Peak of ornate Edwardian styles 50,001 – 85,000 c. 1916 – 1925 Prosperity era; standard hydraulic lift 85,001 – 125,000 c. 1926 – 1935 Introduction of Art Deco styling 125,001 – 175,000 c. 1936 – 1945 Transition to streamlined designs 175,001 – 225,000 c. 1946 – 1955 Post-war production; more chrome 225,001+ c. 1956 – 1960s Mid-century minimalist designs Where to Find the Serial Number