Best to ask a gunsmith for help.
Your Colt K model frontier scout .22 pistol was made in 1964.
The 1959 Colt frontier scout pistol, serial number 48899F is valued at $900 in excellent condition. In fair condition, it is valued at $400.
@ 53 years old
A nice pistol
about 1958
From the records I have, the Colt frontier scout .22 Q model was produced in 1967. (210500F-223199F) about 1967
$500.00
You need the assistance of a gunsmith.
Your colt frontier scout was made by colt in 1959.
50-275 usd
Your colt frontier scout 22lr was produced in 1960.
Your colt frontier scout was made in 1968.