I found a Colt diamondback with that serial number made in 1971.
You did not provide a serial number.
If you will provide me with the serial number I can answer your question for you.
You will have to provide the serial number.
Serial number. Provide a DETAILED description of ALL markings.
Can't be answered since you did not provide the serial number.
Impossible to answer without a serial number. If you call Colt and provide the serial number they can tell you.
You must provide the serial number.
about 1961
You did not provide a serial number.
Impossible to answer since you don't provide the sn.
You will either have to provide the serial number or call S&W.
made about 1962