Malmsjo & Billberg Piano Serial Nos.

1900	6720
1905	7940
1910	9190
1915	10510
1920	11580
1925	12370
1930	13390
1935	14040
1940	15170
1945	16320
1950	17370
1955	18500
1960	22400
1966	74955
1970	93100
1980	100055
1983	101370

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.