about 1907
@1968
Per proofhouse.com, the Colt single action army with that serial number was made sometime after 1978.
I assume your single action is pre-war ? If so, then made about 1907. As to the caliber, check markings on barrel. that should give the caliber.......
What you have is a Model 1885 Single Shot (high-wall) shotgun that was manufactured in the year 1913.
A Colt single action 1860 army with that serial number was made in 1866.
your colt single action was made in 1970.
not sure
Your colt single action army dates to 1881 with the serial number you provided.
If it is Colt single action army, then it was made in 1889.
If this is a Colt single action army, it was made in 1874.
The Colt 1877 lightning with that serial number was manufactured in 1888,about 121 years ago.
22 cal. single action colt frontier serial# 34170K was made in 1968