Your revolver is a variant of the Colt Single Action Army. If memory serves, that would have been late in the 1800s or early in the 1900s. Your best bet will be to contact Colt, and pay them for the research and an official letter regarding manufacture date. If not a copy, these can be quite valuable.
No serial number given.
If that is a Colt frontier scout with a suffix F after the serial number, it was made in 1962.
1888
1899
Probably Colt
1882
about 1892
1907
1882
1903
about 1960
requires a professional to look at it