Hardman Piano Serial Nos.

1900	48000
1905	58000
1910	68100
1915	77200
1920	86000
1925	91500
1930	94200
1935	95200
1940	97000
1946	100300
1950	10571
1955	109000
1960	121100
1965	132000
1971	141100
1975	147600
1980	151100
1982	152200

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.