Upper arm protection. Ex: Bashford Dean, founder and first curator of the Arms and Armor Department, Metropolitan Museum of Art. Ex: Higgins Armory Museum, Worcester Massachusetts. Four pieces, the cylindrical main plate with flared upper edge engaging a roped turning knuckle and upper plate. Two articulated lower plates. Original suspension leathers. Well made and preserved. The inside with cancelled Dean collection number and Higgins number. A significant and complex element of Gothic armor from two legendary collections.