Welmar Piano Serial Nos.

Year	Serial No.	Year	Serial No.
1925	13000	1970	70000
1930	16500	1972	72000
1935	20000	1974	74000
1938	21600	1976	76000
1940	23500	1978	78000
1946	46000	1980	80000
1948	48000	1982	82000
1950	50000	1984	84000
1952	52000	1986	86000
1954	54000	1988	107140
1956	56000	1990	107935
1958	58000	1992	108420
1960	60000	1994	109205
1962	62000	1996	109990
1964	64000	1998	110590
1966	66000	2000	110940
1968	68000	2002	111240

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.