Alexander Hermann Piano Serial Nos.

1903	2280
1908	2970
1912	5730
1916	7070
1920	8370
1925	11949
1930	16077
1935	17300
1940	18112
1945	18900
1950	19600
1955	20258
1960	21410
1965	23285
1970	26105
1975	33001
1980	44501
1985	57751
1990	73491

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.