Leslie Bros. Piano Serial Nos.

1905	12000
1906	15000
1907	18000
1908	21000
1909	24000
1910	27000
1911	31000
1912	35000
1913	40000
1914	50000
1915	52000
1916	54000

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.