You can find out at Proofhouse.com in the Colt tables.
For the Colt positive special ,it was in 1934.
Proofhouse.com has Colt sn data.
made about 1972
For the Colt police positive .38 revolver, proofhouse,com shows 1907 as the production year.
The Colt police positive .38 with sn 8707 was produced in 1906.The second year of production.
is it an original civil war pistol or a modern re-production ???
Colt Dragoon Revolver was created in 1848.
When was Colt revolver? That's a strange question. You might want to clarify.
The 44 caliber Colt Army Model 1860 revolver began production in 1860 and was made until 1873
To determine the age of a Colt New Frontier revolver with the serial number G59414, you would typically refer to Colt's manufacturing records or databases, as they provide production dates based on serial numbers. The "G" prefix indicates that this revolver was made in the late 1970s to early 1980s. Specifically, it is likely produced around 1978 or 1979. For exact dating, consulting specific Colt references or customer service may be necessary.
Patterson, NJ 1836 ie the Colt Patterson Revolver
Go to the Colt website.