That high serial number is a dead give away. I don't even remember if the 2nd gens went that high. Some of the late F series 3rd models must have or else it could be a 3rd gen with the Sam'l Colt signature filed and buffed out.
The serial number shows up in the Colt look-up system for about a dozen or more pistols, but only four 1st gen percussion models, and of course none are Dragoons, so I have no idea where he got his date from. The are no 2nd gen black powders with this number listed either.
However, I have a 2nd gen 2nd model Dragoon in the 28000 serial range and even it doesn't show up in the system. In fact, there are a lot of late 2nd gens that do not currently show up in the Colt look-up system.
The serial numbers and Colt patent stamps are too fresh, clear, and deep.
The stocks are still flush with grip frame and no noticeable wear, dents, or scars especially when compared to the metal parts
A distinct shine is still apparent on the flash guard and other areas of the frame---meaning their aging solution might have erased most of the case colors, but it didn't eat into the case hardening as much as the rest of the unhardened steel of the revolver. Look at the shot of the serial numbers from the bottom of the frame. You can see how different the metal of the frame looks next to the lower part of the barrel lug. In fact the frame still shows a bit of case color in this area.
Too much of the roll engraving still deeply imprinted. Not commensurate with the rest of the supposed "wear" on the gun.
In fact, this one of the worst faking jobs, I think I have ever seen. It's almost as bad as a bald guy thinking he's fooling people by wearing a toupee with a chin strap!