Bacon, Francis, Piano Serial Nos.

1905	11000
1908	17000
1911	23000
1914	29300
1917	34000
1920	38000
1923	44000
1926	49000
1929	60000
1932	70000
1934	75000

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.