Kodak 12 inch (304mm) f/6.3 Commercial Ektar OY183 in a No. 4 Acme Synchro shutter, with caps, mounted on a Canham 110x110 lens board. The glass is clear with no fungus haze or fog. The shutter fires at all speeds and seems close. The shutter might need some adjustment of the release for the B and T settings. It works but if you move the lever all the way to the end of its travel the shutter just closes as if on one of the timed settings. The lens is cosmetically clean. These are great lenses, very sharp. Kodak recommended the 12" lens for use with 8x10 cameras.