I have carefully read the whole thread on http://www.treasurenet.com/forums/what/120576-solved-more-input-needed-old-no-name-pistol.html
. I have watched every picture posted.
Obviously, nothing can be definitely stated from the serial numbers, the screws threads, the absence or presence of safety pins, or the barrel rifling.
The thing that gives it away for me is the "cal. 36" stamped above the barrel wedge.
I have never seen this stamping on that place on any original cap and ball revolver, only on Italian replicas.
To the best of my knowledge, no Confederate maker ever stamped any caliber on their revolvers, be it above the wedge or anywhere else.
When Colt started stamping the caliber of his cap & ball revolvers, he chose to put it on the trigger guard.
To me the answer is rather obvious then : the revolver is definitely not an original. It was most likely built from an imported italian kit in the early 1960s.
This is the only explanation for the missing markings : the kits parts were not proofed, many cheap italian replicas bore no maker's mark, the "made in Italy" would not be stamped on a kit. Regarding the "Black powder only", it was not stamped on cap and ball revolvers in the early 1960s. It only appeared in the early 1970s.
So there was no need to defarb the gun, and it certainly has not been defarbed, otherwise the "cal. 36" would have been filed away too.
The ancient looking serial numbers were there from the start, and the others were added later.
As for the files markings on the brass frame, my best guess is the parts needed some filing to fit, and that filing was a bit rough.