1 3/16″ wide. Brass body. Steel shackle. Keyway: Paracentric. Nickel plated finish. “NM817” is stamped on the obverse of the case at 12 o’clock. “MADE FOR” and “MARMON” is stamped on the reverse of the body. “THE YALE & TOWNE MFG. CO.” is stamped on the obverse of the shackle. “MADE IN U.S.A.” is stamped on the reverse of the shackle.