about 1951
about 1948
about 1948
what year was a Hitachi excavator built with serial number 133 2797
It was built in 1959!
it would appear there are too many numbers in your serial number.....................
about 1905
about 1918
about 1929
about 1918
1917
1924
Assuming this is an upright (vertical) piano, the serial 261236 would belong to a unit built sometime in 1936. If the serial number belongs to a grand instead, it would have been built in 1984.