From the grip shape, it does not look like a Pietta. It may be a "defarbed" repro where the Italian manufactureres marks have been removed and made to look "period" for reinactor use.
With over 15 perCUSSIN' revolvers, I've been called the Imelda Marcos of cap & ball.
SASS#3302 (Life), SASS Regulator, NRA (Life), DGB#129
Wolverton Mtn. Peacekeepers (WA), former Orygun Cowboy (Ranger, Posse from Hell)