A #3 Optimo, in mostly working condition. It's pretty big - 3 3/4" diameter. The shutter button sticks, which makes T&B sort of useless. Should be easy to clean up. 1s is around 2s. 1/2s is around 1s. Other progress nicely and seem better. Its been sitting disused for who knows how long so it might improve with some exercise. Lensboard, retaining ring and screws included. Dust is free. $50+shipping (USPS Priority).