Allison Piano Serial Nos.

Year	Serial No.	Year	Serial No.
1890	21000	1924	48400
1892	22600	1926	49800
1894	24200	1928	50800
1896	24700	1930	52000
1898	25800	1932	53000
1900	29000	1934	53800
1902	30000	1936	54800
1904	32000	1938	55800
1906	34000	1940	56800
1908	36000	1942	57000
1910	38000	1947	57100
1912	40600	1949	57520
1914	41600	1951	59000
1916	42800	1953	57900
1918	44400	1955	58095
1920	46000	1957	58300
1922	47200	1959	58700

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.