The Vintage Sargent & Co Easy Spring Mortise Door Lock is a rare find from the 1900s, featuring a classic black color and made of brass and metal. This antique original piece was manufactured by Sargent in the United States, showcasing the craftsmanship and design of that era. With a salvage feature, this mortise lock serves as a unique and functional addition to any vintage or historical architectural project, making it a valuable collectible for locksmiths and antique enthusiasts alike.