The following list of numbers represents the date of manufacture followed by the piano serial numbers. The letters ‘sn’ mean serial number.
Piano Manufacturer: Weber
1903 sn-54700 1950 sn-94600 1964 sn-98738 1969 sn-100044
1910 sn-64500 1960 sn-96850 1965 sn-99100 1970 sn-100082
1920 sn-76000 1961 sn-97368 1966 sn-99440 1971 sn-100323
1930 sn-81300 1962 sn-97887 1967 sn-99800 1977 sn-100432
1940 sn-90700 1963 sn-98329 1968 sn-10002 1978 sn-100733
The Weber piano is now manufactured in China under new ownership. The modern Weber is nothing like the original.
Piano Manufacturer: Wegman
1956 sn-160000 1959 sn-169000 1962 sn-180000 1965 sn-191000
1958 sn-166000 1961 sn-176000 1964 sn-187000 1967 sn-192000
Piano Manufacturer: Weinbach
1900 sn-10510 1950 sn-85550 1973 sn-143000 1978 sn-173062
1910 sn-23920 1960 sn-96600 1974 sn-149200 1979 sn-180000
1920 sn-32920 1970 sn-129200 1975 sn-153300 1980 sn-188000
1930 sn-64200 1971 sn-132500 1976 sn-160000 1981 sn-191880
1940 sn-72120 1972 sn-136800 1977 sn-170000 1982 sn-199000
Piano Manufacturer: Wellington By The Cable Company Chicago
1950 sn-318000 1958 sn-342400 1966 sn-386000 1975 sn-425700
1951 sn-321000 1959 sn-345800 1967 sn-393000 1976 sn-429300
1952 sn-323000 1960 sn-350600 1969 sn-398000 1977 sn-434000
1954 sn-333000 1962 sn-360000 1971 sn-407300 1979 sn-443000
1955 sn-336500 1963 sn-365000 1972 sn-411400 1980 sn-448000
1957 sn-339200 1965 sn-379000 1974 sn-420700 1982 sn-455200
Piano Manufacturer: Whitney By Kimball
1950 sn-517000 1957 sn-579000 1964 sn-646800 1971 sn-771000
1951 sn-528000 1958 sn-586500 1965 sn-661300 1972 sn-817000
1952 sn-537020 1959 sn-595500 1966 sn-678500 1973 sn-820000
1953 sn-554200 1960 sn-604000 1967 sn-700100 1974 sn-901000
1954 sn-553000 1961 sn-607400 1968 sn-717900 1975 sn-951000
1955 sn-562300 1962 sn-617900 1969 sn-721500 1976 sn-1000100
1956 sn-571300 1963 sn-630500 1970 sn-764200
Piano Manufacturer: Willis & Sons
1900 sn-20000 1940 sn-57300 1952 sn-74700 1957 sn-84800
1910 sn-28400 1945 sn-63300 1953 sn-78600 1958 sn-92500
1930 sn-45700 1951 sn-68800 1955 sn-81600 1960 sn-102000
1960 sn-364200 1966 sn-397700 1972 sn-420500 1978 sn-440000
1961 sn-370700 1967 sn-401500 1973 sn-424900 1979 sn-444000
1962 sn-376900 1968 sn-405200 1974 sn-430300 1980 sn-446900
1963 sn-383100 1969 sn-407500 1975 sn-433400 1981 sn-449700
Piano Manufacturer: Winter
1900 sn-4000 1940 sn-183000 1952 sn-291000 1957 sn-84800
1910 sn-28000 1946 sn-225000 1953 sn-310000 1958 sn-92500
1930 sn-98000 1951 sn-278000 1955 sn-324000 1960 sn-102000
1960 sn-364200 1966 sn-397700 1972 sn-420500 1978 sn-440000
1961 sn-370700 1967 sn-401500 1973 sn-424900 1979 sn-444000
1962 sn-376900 1968 sn-405200 1974 sn-430300 1980 sn-446900
1963 sn-383100 1969 sn-407500 1975 sn-433400 1981 sn-449700
After 1960:
1960 sn-91014 1966 sn-109800 1972 sn-127200 1978 sn-144000
1961 sn-92222 1967 sn-112300 1973 sn-130700 1979 sn-145600
1962 sn-94371 1968 sn-116000 1974 sn-135600 1980 sn-148000
1963 sn-97026 1969 sn-120000 1975 sn-137500 1981 sn-150500
1964 sn-100442 1970 sn-121900 1976 sn-140900 1982 sn-145300
Piano Manufacturer: Wurlitzer
Apollo sn-De Kalb sn-Julius Bauer sn-Melville Clark sn-Farney
Kingston sn-Kurtzman sn-Merrium sn-Schaff Bros. sn-Underwood
1901 sn- 480 1910 sn-11600 1919 sn-36000 1928 sn-85000
1902 sn-1430 1911 sn-13000 1920 sn-40000 1929 sn-93000
1903 sn-1910 1912 sn-14000 1921 sn-45000 1930 sn-112000
1904 sn-3000 1913 sn-15000 1922 sn-49000 1931 sn-118000
1905 sn-4500 1914 sn-19000 1923 sn-53000 1932 sn-126500
1906 sn-6000 1915 sn-22000 1924 sn-58000 1933 sn-130300
1907 sn-7500 1916 sn-25000 1925 sn-63000 1934 sn-133300
1908 sn-9000 1917 sn-28000 1926 sn-77000 1935 sn-136000
1909 sn-10300 1918 sn-32000 1927 sn-80000 1936 sn-138700
After 1937:
1937 sn-1500001952 sn-444000 1969 sn-106500 1981 sn-1645000
1938 sn-1750001953 sn-474451 1970 sn-1105000 1982 sn-1700000
1939 sn-1800001955 sn-537000 1971 sn-1145000 1983 sn-1725000
1940 sn-1950001960 sn-657000 1972 sn-1175000 1984 sn-1775000
1941 sn-2100001961 sn-715000 1973 sn-1205000 1985 sn-1825000
1942 sn-2250001962 sn-760000 1974 sn-1235000 1986 sn-1850000
1946 sn-3300001963 sn-815000 1975 sn-1266000 1987 sn-1900000
1947 sn-3330001964 sn-860000 1976 sn-1296000 1988 sn-2020000
1948 sn-3400001965 sn-905000 1977 sn-1385000 1989 sn-2055000
1949 sn-3700001966 sn-945000 1978 sn-1495000 1990 sn-2080000
1950 sn-4000001967 sn-985000 1979 sn-1550000 1991 sn-2115000
1951 sn-4190001968 sn-1025000 1980 sn-1595000 1992 sn-2145000