You're right Frank in that the architecture isn't quite right. Hawks guns are really pretty sleek and this one misses that sleekness by some.
The barrel tang and swivel works looks like his work, although he used a forward part of a lock for the frizzen and spring on his flint rifles and a similar piece on the percussion one I have. This gun just has the drum screwed into the barrel without the forward lock portion. And notice the brass piece between the barrels and how it butts right up to the swivel works on both sides. Hawks brass pieces fit the forward lock portion, so this gun never had those.
The star certainly could be a Hawk piece, as could the patchbox. If the pictures were better so you could get a sharp look at the engraving it'd be easy enough to tell. If the patchbox is a Hawk one, I think it would be one of his earlier ones from what I see.
I don't know, maybe a bit Hawk, maybe Roth, maybe both, certainly confused!
It'll be interesting to see if anyone bids on it,,,,,
John