The Colt frontier peacemaker .22 model with the L prefix was made in 1974.(L01001 to L25000)
The Colt Frontier Scout with that serial number was made in 1965.
Could not find a Colt frontier scout with serial number 56599P, but a Colt frontier scout with serial number 56599F was made in 1959.
If that is a Colt frontier scout with a suffix F after the serial number, it was made in 1962.
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 colt was made in 1959.
Your colt frontier scout was made in 1968.
Can't be answered without the serial number. serial #166043f
It was made in 1963.
Your colt frontier scout 62 was made in 1966.
Your Colt frontier .22 K model was made near the end of 1963 as the year 1964 started with serial number 19724
Colt frontier scout with that serial number was made in 1962 per proofhouse.com