1970 to 1975 I believe.
It is 40 years old, made in 1970.
It was made in 1970. About 39 years ago.
Colt did not make the rifle. Sauer made it for them.
The first 45 long colt lever rifle was made in 1985.
a gunsmith needs to check both the ammo and rifle.
Contact Colt Firearms customer service.
The small frame .22 rifle with that serial number was made about 1897 (112 years old) and the medium frame .32,.38 &.44 was made in 1888.(121 years old)
Colt was not in business in 1800. Samuel Colt was not born until 1814.
Around 1888.
The Western Field model 880 was made by Colt. It was the Colt Colteer semi-automatic .22 LR rifle.
Proofhouse.com has Colt sn data.
If your Colt Stagecoach was made from 1965 - 1968 it will not have a serial number.