SN info on Colt's after 1978 is best acquired by calling Colt, unless you want to spen @$100 to get a Colt letter.
Published data does not go that high. You will need to call Colt
You need to call Colt to find out. That sn goes beyond published data.
The best I can do is say that your colt Combat commander series 80 was made from 1983-1996.
10-800 usd
300-700 USD
About $700-$850, depending on exact version and condition.
value depends on overall condition.............
500 to 700 dollars depending where part of the US you live in.
my guess would be late 1970's.................
How can I find out what year Colt Combat Commander Mark 4 Series 80 was made?
around 1980.
100-670 usd