Hamilton Piano Serial Nos.

Year	Serial No.	Year	Serial No.
1926	119000	1966	226950
1928	124500	1968	243877
1930	126000	1970	258837
1932	126800	1972	272308
1934	127300	1974	287616
1936	128000	1976	304497
1938	130000	1978	321020
1940	132000	1980	343950
1942	133900	1982	366819
1947	135000	1984	387119
1948	138000	1986	401172
1950	142300	1988	414349
1952	149000	1990	427993
1954	156200	1992	440915
1956	165711	1994	450198
1958	176707	1996	459495
1960	188249	1998	469198
1962	199523	2000	477951
1964	212312	2002	483743

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.