1900 | 24000 |
1905 | 34000 |
1910 | 44000 |
1915 | 54000 |
1920 | 64000 |
1925 | 237000 |
1930 | 266000 |
1935 | 274000 |
1940 | 291000 |
1942 | 300250 |
1948 | 403000 |
1952 | 416000 |
1955 | 503000 |
1957 | 512000 |
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.
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