Need serial number to answer.
If the serial numbers starts with a "G", you have a Colt Peacemaker Buntline. The serial number you list has to two more numbers than it should have. If the sn is G62260 - it was made in 1973 If the sn is G26028 - it was made in 1971 A New Frontier Buntline would have NF in the serial number.
Based on proofhouse.com, a frontier scout/peacemaker .22 with that serial number is about 47 years old having been made about 1962.
Impossible to answer without a serial number.
1968
A Colt peacemaker with that serial number was made in 1974.
You will have to call Colt or provide the serial number.
1976
Your colt buntline scout was made by colt in 1964.
1977
about 1971
1961