Without the serial number and a very good description to include all markings and any accessories, the question can't be answered.
Your colt frontier scout 22lr was produced in 1960.
That Colt frontier scout was made in 1959.
1966
Your colt frontier scout K model was made in 1961.
It was made in 1962.
1961
A Colt frontier scout with serial number 127580F was made about 1960.
1958
Proofhouse.com has the sn data you are looking for.
In 1968.
In 1959
1958