Various pieces of a Roman Lock Mechanism, including the front and rear plate covers as well as the internal shell.  Also included in the set is a lock bolt specifically made for an individual key(as the holes indicate). 

A bronze key is also part of the set and still has remnants of the earths encrustations on it.  There are two rows of criss-crossed lines near the key ring and near the end piece to add decoration to it. 

The lock plates have a raised circle that surrounds the geometric key hole and smaller holes where the rivets would held all pieces together(one rivet still remains). 

No further information is known about the functioning of a Roman Lock, however these were all components of such a lock.  Any information or references to this type of artifact would be appreciated.

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