The reason I posted this, is that I believe that John Potter was the maker of this fowler. In Tom Grinslade's book I found no less than 12 different maker signed New England fowlers that were signed on the lock. All of these had English names and virtually all the locks were like mine. It appears that in Mass circa the Rev War, gunmakers signed their guns on the lock instead of the top of the barrel. I believe my gun was made by John Potter, a previously unknown gunsmith. i was hoping someone had seen another gun marked like mine.
I did find a man named John Potter in Worcester, Mass who was listed as a blacksmith, goldsmith, silversmith, cabinet maker, instrument maker. He could have been the man who made this gun. Seems like he could make anything!
Al