A friend and I built this gun over the last couple of winters. I is a full scale copy of one of the cannons that hang in the NPS museum at Gettysburg.
It has some features which have been discussed recently on this board.
It had a tube sight or scope originaly mounted on it.
It has a navy style lock for precussion firing. (or .22 blank)The one in Gettysburg
does not have this, but one other surviving piece does. Which makes it quite easy to photograph.
And its a breech-loader. The originals were first made 1856.
Thank DD, for doing the links.
guardsgunner