1969
Could not find a Colt frontier scout with serial number 56599P, but a Colt frontier scout with serial number 56599F was made in 1959.
The Colt Frontier Scout with that serial number was made in 1965.
Your Colt frontier scout with that serial number would be 47 years old, made in 1964.
A Colt frontier scout with serial number 127580F was made about 1960.
Your frontier scout was made in 1963.
No serial number provided.
Your colt frontier scout was made in 1968.
Colt frontier scout with that serial number was made in 1962 per proofhouse.com
Your colt frontier scout 62 was made in 1966.
If that is a Colt frontier scout with a suffix F after the serial number, it was made in 1962.
1962