I dont what I can add??The site it was found has been occupied since the 1870's,musket parts along with a powder flask was found there.The item is brass,the mark near the "Patent" appears to be just a "scar",and the pics are of the COMPLETE item.The part that is possibly the trigger guard is hinged,and the there is a part on the one end that is bent over and appears to possibly hold a barrel?Thanks for trying guys!!This one has had me stumped for awhile!!!