Seller: vintageviseworks (842) 100%, Location: Helena, Missouri, Ships to: US, Item: 112559134422 This is from unknown origins... All Iron construction and is unlike anything I have ever seen!. It is fully functional! By pushing down the hasp , it unlocks the jaws . This is a one of a kind piece as far as I know. I've showed it to a couple lock collectors and they have never seen any thing like it before either! There are no markings on this piece that I can't see.