Ludwig & Co. Piano Serial Nos.

1900	25000
1903	41000
1906	55000
1909	70000
1912	81000
1915	90000
1918	96000
1921	102000
1924	108000
1927	116000
1930	121500
1933	125000
1936	131000
1940	134000
1941	137000

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.