Netzow Piano Co. Serial Nos.

1904	10300
1907	19000
1910	30200
1913	40000
1916	49600
1919	57000
1922	64000
1925	70000
1928	74600
1931	79600

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.