When was Colt revolver? That's a strange question. You might want to clarify.
Colt Dragoon Revolver was created in 1848.
Patterson, NJ 1836 ie the Colt Patterson Revolver
Go to the Colt website.
1836
no
Yes.
life was not long with 'one' shot..........life improved with the colt revolver.............
Get a letter from Colt
Samuel Colt inveted the Revolver.
Proofhouse.com has Colt sn data.
Colt Model 1877 "Lightning" Double Action Revolver in caliber .38 Colt and the similar revolver model "Thunderer" in caliber .41 Colt.
Colt Paterson, the revolver was patented by Samuel Colt on February 25, 1836 in the US.