This Gundlach Turner Reich Anastigmat 12'' (304.3mm) f/7, 19.7'' (500.4mm) f/12.5, and 25" (635mm) f/16 triple convertible large format lens comes in a No 4 Universal shutter. It does not come with its retaining/mounting ring. Its rear thread diameter is 63mm. This lens will cover 8x10 with room for movements. There is a tiny bit of separation around the outer perimeter of both the front and rear element groupings - nothing that will have any impact on your results. There are also a few light scuff marks on its exterior. All settings adjustments are smooth and all shutter speeds sound correct. Its glass is free of any fungus or haze. There is no oil on its aperture blades.