your question is like asking what is my 1958 car worth ??
what model colt, what caliber, what condition. bore condition, metal condition and so on.......
value depends on overall condition. You listed ' colt 22 ptfa' what model colt. serial number, barrel length, pistol, revolver ?????????????
Check on the butt.
100-1000 USD
Patent Firearms PT and FA (as used by Colt)
50-350 usd
The Book of Colt Firearms has what you are looking for.
Impossible to answer without a detailed description of condition.
the colteer 22 rifle was made from about 1957 to 1966. About 25,000 were made. No serial numbers
300 to 1000 dollars depending on bluing and genral condition
need serial number. number is found on right side of receiver near trigger guard........
100-1000 USD depending on EXACTLY what you have, condition, originality of all parts, box, papers, history, etc..
Impossible to do without pictures or hands on evaluation.