made around 1879.
1896
made about 1893. value depends on condition
if a single acton model then about 1893 (I think)
What is the age of a Colt rifle serial SLD25319
The year of manufacture for your pistol is 1877 .In 1878 the serial numbers started at #3000. You can contact colt and they can supply you with the date the gun was shipped from the warehouse and to where it went.
You will have to call Colt with the serial number to find out.
What is the age of a Colt Cobra with a serial number 58472-LW
If that is a lightning large frame express, it was the 4th one produced in 1892 (5700-5999)
Proofhouse.com has serial number tables for Colt.
http://www.coltparts.com/Dates_of_Mfg.html According to the above website, the rifle would have been made in 1893!
The age and value of a colt .45 peacemaker serial 180356 are about 1900
That Colt was made in 1891. Colt started with serial number144000 in 1992.