Brahms & Bach Piano Serial Nos.

1922	12500
1924	15500
1926	18500
1928	138000
1930	145000
1932	152000
1934	157000
1935	159000

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.