This a 2nd model Brown Bess musket that was American captured and restocked.  The stock retains the British designed long fluted buttstock but with a distinct New England drop. The buttstock also has a Christian Cross that was carved in it by the American soldier who carried it.  You can see wear the original stock broke at the wrist as there was a repair to the brass trigger guard. The musket most have been used as a club in hand to hand combat. Obviously ,the American won. The 41 1/2" barrel retains two British proofs and the orinal barrel makers intial.  A really neat Revolutionary War musket that saw action on both sides. 
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