You will have to call Colt
The best I can do is say that your colt Combat commander series 80 was made from 1983-1996.
my guess would be late 1970's.................
You need to call Colt
How can I find out what year Colt Combat Commander Mark 4 Series 80 was made?
You must call Colt to find out.
70 series ,about $700 max
According to proofhouse.com ,a Colt combat commander with that serial number was manufactured in 1977. The 1978 series started with 70SC57900.
Published data does not go that high. You will need to call Colt
Post 82. YOu will have to call Colt to narrow it down any further.
You need to call Colt to find out. That sn goes beyond published data.
around 1980.
You will have to call Colt with the sn since you didn't provide it.