Corbridge type C.1st to early 2nd century AD, the Time of Christ. Bronze, just under 1 ¼” width. Trefoil terminal and flared base axel channel, distorted in battle. Made of a single folded plate and double thickness throughout. Excellent with three securing rivets remaining. Used for articulating the shoulder plates and attaching the torso plates. a search for a Corbridge hinge plate will produce a virtually identical example. A genuine element of Roman Imperial armor.