This is 5 pieces of brass hardware, all in the same design. two of the pieces are for pocket doors. Another pair have a keyhole and the odd piece has a hole for a doorknob. The backs are marked Chicago and are numbered. These are assembled with different inserts with different numbers for the various purposes. These vintage pieces have some oxidation and darkening. They are 7'' x 2 3/8'' with a recess of approx. 1 1/2'' x 3 1/2''.