These are the best images of a finished gun from Chamber's English fowler kit I've seen, and I think too, the nicest workmanship. We've seen lots of examples of the Pennsylvania fowler; I have one myself, but this one really catches my interest.
One of the rules up here in the Great White North, for smoothbore round ball competition, is that the gun must have no sighting 'device' "above the plane of the barrel". That would disqualify a fowler made with a hump breech tang and sighting groove, whereas Mitch's gun is completely acceptable.
I like you gun a lot Mitch.