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Glocktalk has a serial number sticky
What is the production year of a colt combat commander with serial number 70sc5572? Early 1972.
With that serial number, you will have to call Colt.
Your serial number places the year of production as 1978.
The Colt commander with that serial number was made in 1955.
The serial number allows the maker to track production.
Based on the serial number, your Colt was made in 1977.
The production date of a piece of machinery can be identified by the serial number.
Production date was 1968.
Production date 1977.