The original designation was Old Model Pocket Pistol or Model of 1848 Pocket pistol or Baby Dragoon. There were only a few (less than 10) Thousand of the 1848s made. Wells Fargo supposedly purchased a large number of them for their agents which is how they have gotten that name today. The Improved Pocket Pistol or Model of 1849 Pocket Pistol had the loading levers. The other noticeable difference between the 48 & 49 models were the cylinder slots and trigger guards. The 48 had square back trigger guards and round or oval shaped slots like the Patterson, Walker and 1st Model Dragoons. The 49s had round trigger guards 3rd Model Dragoons & and rectangular slots like 2nd and 3rd model Dragoons and all subsequent revolvers. There was also a model introduced in 1850 with a six shot cylinder in place of the five shot cylinder. That model is just lumped in with the 1849 models now days.
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