Revolutionary War era British Brown Bess Bayonet BA Marked Found in Brandywine

Revolutionary War era British Brown Bess Bayonet Broad Arrow Marked standard Size. Found manye years agai in Brandywine, PA. From an old PA collection. Exellent condition, some pitting.  Appears to have been polished at some point.  Approx. Blade length 16.3  in. socket length 4 in.  overall length 21.25 in.