The Colt Challenger pistol with the serial number 2391-C was manufactured in the early 1950s. Colt typically produced the Challenger line between 1950 and 1956, making it likely that this particular pistol was made during that timeframe. For a precise manufacture date, consulting Colt's production records or a Colt historian would provide the most accurate information.
The lower the serial number the younger the pistol is
Depends on the model and serial number.
What model?
NO
1978
you would need the model number as well as serial number.
Go to: www. proofhouse.com with serial number.
what is the SERIAL NUMBER ??????????
PC0327
Will need model name to answer.
1918
Impossible to do with just the sn.