That Colt model 1911 was a commercial model, not a government model and based on the serial number, it was made in 1947.
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.....................
That Colt was made in 1943 by Remington Rand under cotract to Colt Mfg. Co.
about 1918
about 1918
about 1929
about 1905
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.
According to the serial number provided, it was built in 1942. According to bluebookofpianos dot com, it was built in 1995.