The following list of numbers represents the date of manufacture followed by the piano serial numbers. The letters ‘sn’ mean serial number.
Piano Manufacturer: Grand -Kinkaid By Marantz
Piano Manufacturer: Superscope Pianocorder Player Pianos
1961 sn-13200 1966 sn-17400 1971 sn-20200 1976 sn-23500
1962 sn-13900 1967 sn-17800 1972 sn-20900 1977 sn-24100
1963 sn-14500 1968 sn-18100 1973 sn-21700 1978 sn-25200
1964 sn-15200 1969 sn-19100 1974 sn-22300 1979 sn-25800
1965 sn-16800 1970 sn-19500 1975 sn-22900 1980 sn-26600
Grotrian sn- Steinweg
1900 sn-12131 1940 sn-65499 1960 sn-85682 1975 sn-114268
1910 sn-24171 1945 sn-66700 1962 sn-89298 1980 sn-124707
1920 sn-38076 1950 sn-67900 1965 sn-94787 1985 sn-135202
1930 sn-61235 1955 sn-75500 1970 sn-104665 1990 sn-144906
Piano Manufacturer: Gulbransen
1915 sn-90000 1940 sn-344000 1961 sn-479000 1966 sn-551000
1920 sn-140000 1945 sn-357000 1962 sn-506000 1967 sn-559400
1925 sn-218000 1950 sn-405500 1963 sn-515000 1968 sn-565000
1930 sn-301000 1955 sn-443500 1964 sn-524000 1969 sn-571000
1935 sn-309000 1960 sn-488300 1965 sn-542000
Piano Manufacturer: Haddorf
1950 sn-131600 1953 sn-134600 1955 sn-152000 1957 sn-167400
1951 sn-132700 1954 sn-141000 1956 sn-167003 1960 sn-170100
Piano Manufacturer: Haines Brothers
1900 sn-39000 1922 sn-69700 1933 sn-80600 1938 sn-98000
1905 sn-47200 1923 sn-70900 1934 sn-83600 1939 sn-101000
1910 sn-53100 1924 sn-72300 1935 sn-87200 1940 sn-104000
1915 sn-61600 1925 sn-73400 1936 sn-90800 1941 sn-107400
1920 sn-66200 1930 sn-77900 1937 sn-94400 1942 sn-109000
Piano Manufacturer: Uprights & Grands By Poole/Aeolian After 1960:
1965 sn-928000 1970 sn-146000 1975 sn-177000 1980 sn-208700
1966 sn-109700 1971 sn-153400 1976 sn-185900 1981 sn-214200
1967 sn-119400 1972 sn-160600 1977 sn-189000 1982 sn-221200
1968 sn-132800 1973 sn-167600 1978 sn-194000 1983 sn-221264
1969 sn-140300 1974 sn-171800 1979 sn-201500 1984 sn-221500
Piano Manufacturer: Haines, W.P.
1964 sn-100442 1969 sn-120000 1974 sn-135600 1979 sn-145600
1965 sn-104300 1970 sn-121900 1975 sn-137500 1980 sn-148000
1966 sn-109800 1971 sn-124900 1976 sn-140900 1981 sn-150500
1967 sn-112300 1972 sn-127200 1977 sn-142800 1982 sn-145300
1968 sn-116000 1973 sn-130700 1978 sn-144000 1983 sn-162845
1965 sn-928000 1970 sn-146000 1975 sn-177000 1980 sn-208700
1966 sn-109700 1971 sn-153400 1976 sn-185900 1981 sn-214200
1967 sn-119400 1972 sn-160600 1977 sn-189000 1982 sn-221200
1968 sn-132800 1973 sn-167600 1978 sn-194000 1983 sn-221800
Piano Manufacturer: Hallet & Davis Piano Company
Grands Before 1960. Upright & Grands After 1960
1901 sn-49500 1915 sn-85000 1929 sn-131000 1944 sn-215000
1902 sn-51000 1916 sn-89000 1930 sn-132000 1945 sn-215000
1903 sn-53000 1917 sn-93000 1931 sn-132000 1946 sn-215000
1904 sn-55000 1918 sn-96500 1932 sn-132000 1947 sn-503000
1905 sn-55000 1919 sn-100000 1934 sn-132000 1948 sn-504000
1906 sn-59000 1920 sn-102000 1935 sn-133000 1949 sn-504900
1907 sn-61000 1921 sn-105000 1936 sn-135000 1950 sn-506000
1908 sn-63000 1922 sn-109000 1937 sn-153000 1951 sn-507000
1909 sn-65000 1923 sn-113000 1938 sn-163000 1952 sn-508000
1910 sn-68000 1924 sn-117000 1939 sn-170000 1953 sn-507550
1911 sn-71000 1925 sn-121000 1940 sn-183000 1954 sn-509700
1912 sn-74000 1926 sn-124000 1941 sn-193000 1955 sn-510270
1913 sn-77000 1927 sn-128000 1942 sn-204000 1956 sn-510260
1914 sn-81000 1928 sn-131000 1943 sn-215000 1957 sn-510500
Uprights & Grands By Winter/Aeolian After 1960:
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
1964 sn-387900 1970 sn-410900 1976 sn-436900 1982 sn-452400
1965 sn-392000 1971 sn-415600 1977 sn-438000
Piano Manufacturer: Hamilton
1900 sn-16000 1922 sn-102200 1935 sn-127500 1960 sn-188249
1905 sn-36000 1923 sn-107500 1940 sn-132000 1966 sn-226950
1910 sn-56000 1924 sn-111000 1947 sn-135000 1973 sn-279076
1915 sn-76000 1925 sn-115500 1952 sn-149000 1980 sn-343950
1920 sn-93000 1930 sn-126000 1955 sn-160686 1982 sn-366819