Unique piece of antique Sterling Silver jewelry.  I believe the chain is original to the piece,  the chain is 23” long and the locket is 2.25” long with bail, the chain piece that goes into the lock closure is broken, but could be replaced.  It will close but I don’t no how secure it is, the glass inside the locket is in tact but one side of the silver around the glass is rippled(see picture). Weighs 45.5grams.