Grotrian Piano Serial Nos.

Year	Serial No.	Year	Serial No.
1920	38076	1970	104665
1930	61235	1972	108311
1940	65499	1974	112312
1942	66075	1976	116134
1944	66500	1978	120276
1945	66700	1980	124707
1949	67250	1982	128820
1950	67900	1984	132420
1952	70300	1986	135110
1954	73400	1988	138290
1956	77227	1990	141600
1958	80979	1992	145200
1960	85682	1994	149180
1962	89298	1996	151340
1964	92700	1998	153096
1966	96828	2000	154571
1968	100440	2002	155716

It is remarkable that data on piano serial numbers has survived so well for over a century. However, some inaccuracies are inevitable. These serial numbers are to be used only as a rough guide to a piano's age. An exact date does not make a material difference to a piano assessment. To be within 2 to 5 years is accurate enough to give an informed report on a piano.