It was produced in 1971,
@1976
1976
That model was produced in 1922.
Without a detailed description, someone would have to research every serial number of every model of revolver Colt ever made.
@ 1978
Around 1917.
your colt lawman mkIII was made in 1978.
The Colt police positive .38 with sn 8707 was produced in 1906.The second year of production.
No way to answer without the serial number. If you call S&W with the sn, they can help you.
If it is a Colt new police .32,it was produced around 1902
Not enough information provided. Need description of the revolver, including any and all markings on barrel and receiver, type of action and model if available.