A very rare mid 17th Century English Civil War Period Mushroom Cap Hanger, the hanger with 70cm single edged blade, elongated  staghorn grip set with three iron rivets & terminating with what is known as a mushroom cap pommel with an iron domed cap & finial, the hilt with "D" shaped iron knuckle bow and turned down shell guard .

A very unusual English Civil War Period Hanger, for similar see : "BRITISH MILITARY SWORDS" Volume One: 1600 to 1640 by Stuart C. Mowbray, Page 177.