Vintage 1970's NOS CVA Philadelphia Derringer Caplock Lock Black Powder Pistol. This lock has never been used and has sat in storage for many years. Great replacement or use it to build a custom black powder. Check out all of the pics as they are of the exact item you will receive. Stop by the store for more vintage black powder parts, sporting goods, knives, tools, toys, wrist watches and many other one of a kind items. Thanks for stopping by.