Yamaha Piano Serial Nos.

Year	Serial No.	Year	Serial No.
1920	2100	1970	978000
1930	10163	1972	1317000
1940	31900	1974	1734000
1942	35600	1976	2144000
1944	38000	1978	2583000
1946	39250	1980	3001000
1948	44087	1982	3464000
1950	44200	1984	3832000
1952	51621	1986	4157000
1954	57000	1988	4492000
1956	70000	1990	4811000
1958	89000	1992	5072000
1960	122000	1994	5292000
1962	188000	1996	5466000
1964	298000	1998	5579000
1966	489000	2000	5868000
1968	689000	2002	5978000

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.