I had to put the little show together for another purpose, so thought I'd share it. I think the model may be an arsenal-type model. All that seems to be missing are the capsquares. The trunnion rests are bronze castings, and I can't find my book that would tell something about the full sized piece.
Anyway, barrel weighs 6 lbs, and is 6 1/4 in. long, the whole thing is about 14 in. long and weighs about 11 lbs. Scale model bore is 1 inch diameter. Rear sight mass and front sight are separate pieces, look like brass since they are a bit lighter-colored than the bronze barrel. The barrel was cast into its present shape, from the looks of it.
The model was once in the Fort Ticonderoga museum. The gent I got it from was a friend of the Pell family who owns the fort, or used to anyway.
http://s17.photobucket.com/albums/b62/cannonmn/miscforumsetc/forums%2012/?action=view¤t=dd2d6b62.pbw