Gordon & Sons Piano Serial Nos.

1909	28000
1911	32000
1913	36000
1915	40000
1917	44000
1919	48000
1921	52000
1923	56000
1925	60000
1927	64000
1928	70000

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.