Spencer-Murdoch Piano Serial Nos.

1900	30000
1903	33040
1906	41000
1909	48000
1912	55292
1915	62000
1918	68200
1921	71000
1924	76000
1927	81639
1930	84635
1933	86171
1936	89096
1939	92491
1942	94090

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.