Copper-alloy, 15.76 grams, 45.17mm. 11th-12th century AD. A pair of cast swivel-mount rings, each loop formed as a pair of opposed zoomorphic heads clutching the swivel-half in its jaws. These mounts were used to strengthen the point where a strap had to turn freely through a wide arc. The loops are segmented with transverse banding, which extends on to the swivel halves. The swivel is created from two hemispherical sections, one with a pin and the other pierced. The pin is inserted through the piercing and flattened over to trap it. The piece is complete and articulated. Reference: Mills, N. Medieval Artefacts, Witham, 2003, p.19. Good very fine condition.