1.25” with fixed bar pin on open. Collet holds small accent ribbon. Reverse has 1” long hair line cello split along the collet but the celluloid lays perfectly flat. From the front there is a slight line along the left side but no real trace of damage. Button has a slight yellow tone but is 100% clean and glossy. This design is unlisted in Hake. Ribbon is slightly dark with age but the button displays Mint.