Davenport-Treacy Piano Serial Nos.

1902	1000
1905	9000
1908	28000
1911	55700
1914	81000
1917	115000
1920	146000
1923	176000
1926	193000
1929	215000
1930	217000
1933	270000
1936	278000
1939	289000
1941	302200
1947	403000
1950	409000
1953	419000
1956	508000
1957	512600

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.