Folmer Graflex 5x7 Reversible Adapter Back for Century 4A, 8A, 10A studio cameras. Allows the film to be positioned horizontally or vertically. Mahogany and brass construction. The corner of the ground glass is broken off in the lower right corner which can be seen in the photos. That can readily be replaced if you want to use the back. The springs are in good shape and the back opens up easily to receive the film or plate holder.