I don't think it is a breech block from a breech loading cannon.
Breech blocks don't have/need reinforcing rings and the mouth of the block must be conical/tapering to to obtain a good seal.
I believe it is a thunder mug, but probably a early one 17th, 18thC . see large picture.
best,
Jasper
Last edited by cornelistromp; 2nd August 2014 at 12:28 PM.
|