Try on line auctions, pawn shops, gun shops, gun shows, a want ad, for sale ads, egunparts.com, estate sales, garage sales pawn shops.
Google "colt junior"
Your colt junior 25 auto was produced in 1962.
Depends on your intended use.
1965
Compare against a known original, pictures of of one or appraised by a professional who deals with Colt's.
Junior Colt .25 with that serial number was made in 1973.
No serial number provided.
That Colt junior .25 automatic would be 39 years old. Made in 1973.
by the serial number.........................
About $20
By studying the books that have been written on Colt 1911's
Depends on serial number. Go to proofhouse.com to look it up.