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Grotrian-Steinweg Piano Serial Numbers

Grotrian or Grotrian-Steinweg was established in 1835 by Heinrich Steinweg under the Steinweg name and was passed onto his son Theodor Steinweg when Heinrich left for America, It wasn’t until 1854 when George Friedrich Karl Grotrian join into a partnership with Theodor that the piano company becomes Grotrian – Steinweg. The company has stopped using the Steinweg name in the US in the 1980’s due to legal action taken by Steinway, but the name is still used in Europe. You can use the dates and serials listed below to help date your piano.

Year SN.
1864 – 410
1865 – 560
1866 – 720
1867 – 827
1868 – 898
1869 – 997
1870 – 1137
1871 – 1452
1872 – 1776
1873 – 2167
1874 – 2386
1875 – 2666
1876 – 2994
1877 – 3335
1878 – 3614
1879 – 3869
1880 – 4175
1881 – 4511
1882 – 4789
1883 – 5256
1884 – 5376
1885 – 5710
1886 – 5959

1887 – 5212
1888 – 6618
1889 – 6907
1890 – 7228
1891 – 7634
1892 – 8015
1893 – 8385
1894 – 8791
1895 – 9251
1896 – 9730
1897 – 10238
1898 – 10805
1899 – 11489
1900 – 12131
1901 – 12743
1902 – 13642
1903 – 14731
1904 – 15827
1905 – 16958
1906 – 18137
1907 – 19516
1908 – 20898
1909 – 22406
1910 – 24171

1911 – 26130
1912 – 28150
1913 – 30169
1914 – 31541
1915 – 32100
1916 – 33162
1917 – 34134
1918 – 35069
1919 – 36390
1920 – 38076
1921 – 39802
1922 – 42075
1923 – 44698
1924 – 47337
1925 – 50250
1926 – 52506
1927 – 55788
1928 – 58238
1929 – 60121
1930 – 61235
1931 – 61903
1932 – 62268
1933 – 62494
1934 – 62754

1935 – 63100
1936 – 63515
1937 – 64114
1938 – 64670
1939 – 65179
1940 – 65499
1941 – 65799
1942 – 66075
1943 – 66240
1944 – 66500
1945 – 66700
1949 – 67250
1950 – 67900
1951 – 68800
1952 – 70300
1953 – 71000
1954 – 73400
1955 – 75500
1956 – 77227
1957 – 79057
1958 – 80979
1959 – 83277
1960 – 85682
1961 – 87550

1962 – 89298
1963 – 90908
1964 – 92700
1965 – 94787
1966 – 96828
1967 – 98438
1968 – 100440
1969 – 102719
1970 – 104665
1971 – 106429
1972 – 108311
1973 – 110337
1974 – 112312
1976 – 114268
1977 – 118156
1978 – 120276
1979 – 122517
1980 – 124707
1981 – 127033
1982 – 128820
1983 – 130331
1984 – 132420
1985 – 133780
1986 – 135110

1987 – 136600
1988 – 138290
1989 – 139900
1990 – 141600
1991 – 143300
1992 – 145200
1993 – 147959
1994 – 149180
1995 – 150280
1996 – 151340
1997 – 152300
1998 – 153096
1999 – 153824
2000 – 154571
2001 – 155201
2002 – 155716
2003 – 156239
2004 – 156812
2005 – 157375
2006 – 157880
2007 – 158412
2008 – 159000

Example: If the serial number is 400 then that would make the year 1864