This pocket-door plate dates to around 1900 to 1920s. It has the flashed copper treatment (copper plated with a flashed black lacquer). This door pull, for pulling the pocket door in and out of the wall, is in excellent condition. The pull appears to have never been used. Therefore, it could be old, new stock.
The door plate recesses into the door so that it is flush with the face of the door. That way it will clear the door jam as it is pushed into the wall. The plate (or pull) measures 7 inches long and 2 1/2 inches wide. The inset for the fingers measures 2 7/8 inches by 1 3/8 inches. There is a key hole in the center. This could be used with a mortise lock or simply used for looks.