Seth Thomas "Arcade", ca 1909. 30 day timepiece, large double spring movement with Graham dead beat escapement. Mahogany case is 23 1/2 inches across the front, metal dial is 18". Key lock bezel below the 6, hinge is on top. There is a trap door underneath to access the pendulum. Case has never been cleaned, all original, and running. Ly-Seth Thomas No.580.