Colts serial number database lists only the Combat Commander, and they have no serial numbers that begin with "CJ", though for a number of years the Combat Commander had serial numbers that began with "CL"
You will have to call Colt. Published serial numbers stop at 1978
about 1969
The Colt commander with that serial number was made in 1955.
Take a look at www.proofhouse.com for colt and browning serial numbers. estimated mfg. date 1975.......................
Around 1978 -1979.
Only Colt knows. SN ranges compromise more than one model
Colt combat commander with that serial number was produced in 1968.
Your Colt commander was made in 1977.
Serial numbers in 1968 starting with 53401LW and ending with 60277LW
Call Colt with the sn and they will tell you.
your colt combat commander was made in 1972.