Coin w/ Early Mass State Seal Hallmark Motto HELP

[mds308]

I found this piece on Saturday. It is very well made. Hand hammered, hand chased and hand soldered. It measures 6 1/4 inches tall and weighs 208.7 grams. The hallmark at the base is the very early state Massachusetts Seal with the Indian holding a bow and an arrow. This is not the same mark used by Roswell Gleason & Sons. This piece is not pewter and test positive for silver. I believe it to be made of coin silver. Anybody seen this mark before? Help.

[silverly]

Welcome to the forum. I agree with your estimation that this is a coin silver piece and a very nice one at that. Theophilus Bradbury's mark shown here would be at least a starting place for me: http://www.925-1000.com/americansilver_B5.html