This vintage Kodak Anastigmat 78mm f/4.5 lens comes in a Diomatic No. 0 shutter. It does not come with a retaining ring. Its rear diameter is 19mm. There are a few scuffs and scratches on its exterior and there is a very light haze inside of it. All settings adjustments are smooth and all shutter speeds sound correct. Its glass is free of any fungus or separation to its elements.