Proohouse.com has sn data that will get you close. You can always call Colt and they will tell you over the phone.
A Colt single action 1860 army with that serial number was made in 1866.
your colt single action was made in 1970.
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.
You will have to call Colt with the sn to find out.
If this is a Colt single action army, it was made in 1874.
what can you tell me about a colt single action 45 caliber with a 7-1/2 in. barrel serial number 52154
You will have to call Colt or provide the serial number.
Proofhouse.com has Colt sn data.
A Colt single action army (Pre-War) with the serial # 305068 would have been produced around 1908.
Colt single action army with that serial number was made in 1910
You will have to call Colt with the serial number to find out.