Lessing Piano Serial Nos.

1900	23090
1905	31000
1910	39000
1913	76000
1916	99500
1919	127000
1922	154000
1925	180000
1927	196000

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.