Anyone know what this is for? It came with my house from 1948. Measures about 4.5” x 5”. Front part lifts up. The only markings is a handwritten “50” on the back. Looks like it would have originally been black.
A questioner said: Anyone know what this is for? It came with my house from 1948. Measures about 4.5” x 5”. Front part lifts up.… Read More »Anyone know what this is for? It came with my house from 1948. Measures about 4.5” x 5”. Front part lifts up. The only markings is a handwritten “50” on the back. Looks like it would have originally been black.