If your Colt Stagecoach was made from 1965 - 1968 it will not have a serial number.
began 1965......serial # began 1969 with SC01001
your rifle was manufactured in 1894.
What is the age of a Colt rifle serial SLD25319
Proofhouse.com has Colt sn data
The Colt lighting .22 rifle with that serial number was made in 1899.
a gunsmith needs to check both the ammo and rifle.
What is the manufacture date of a Colt AR15 rifle serial number 192754 model SP1
1889
1894
1885
Need serial number to answer. Look it up at proofhouse.com
1899 for a Colt lightning .22 mag rifle.