You will have to call Colt or provide the serial number.
Can't find date, but Colt Anaconda .44 was produced between 1990 &1999.
Proofhouse.com has Colt sn data.
OLD!
The Colt python with that serial number was produced in 1961 making it 48 years old or the Colt trooper in 1958 making it 51 years old.
100-700 USD
10-1000 usd
Proofhouse.com has Colt sn data.
Requires professional appraisal
your colt trooper mkIII was made in 1978.
50-500 usd
40-400 usd