It was made in 1974.
No way to answer without the serial number.
You will have to call Colt with the serial number to find out.
what is the serial number ????
if your '51 navy is original (not repro) and no '0' in front of serial number, then made about 1853.................................. i have a 1851 also serial number 56870 could you tell me mine.at cortez@wildblue.net
frame.
@1851
1862
1867
The 1851 Colt navy with serial # 112343 was produced in 1861. (98000-117999) about 1861
made about 1852
Need serial number to answer. Go to proofhouse.com to look up.
The 1851 Colt revolver, also known as the Colt Navy Revolver, did have serial numbers, although the practice of serial numbering was not as systematic as it is today. Colt began marking their firearms with serial numbers around 1850, and many 1851 models feature them, but not all. The absence of a serial number does not necessarily indicate a counterfeit or replica, as early production methods varied. Collectors often use the presence and format of serial numbers to help date and authenticate these revolvers.