Dallmeyer RAREAC 25.5mm f1.9 C-Mount lens updated SUPER SIX lens version. Shipped with USPS Priority Mail. This is quite a sought after lens.This lens was made as a successor to the Super Six series of lenses and uses the same double gauss design and heavy glass (I have read about it using rare earth glass). This is what the Lens Vademecum says about it: Rareac f1.9 was made in 20, 25, 38, 51, 80, 102mm, eg as 4in for Vinten F95. These are normally coated, use heavy glass, and are ofte...n warm in color. Layout Da025 but this may be a generic Gauss drawing. This was an updated Super Six but both were still produced for many years. The example I offer is in good shape with one caveat: The front element has lost most of its coating. This shows as a duller area across the glass element. It might be possible to have it re-coated but I am not sure. In use I could not detect any negative or noticeable effects from this defect on the image.The iris moves smoothly from f1.9 to f16 and the internal glass elements appear to have just some dust: quite normal in a lens of this age and it does not affect the image.The lens barrel retains most of its black paint and shows some wear. The c mount thread is intact and it allows this lens to be mounted on micro-four third digital cameras using a common adapter (not included).Ships to continental USA OnlySold as is.Payment for winning bid within 24 hours, please.No returns.Thank you.