Sinar Rodenstock Apo-Ronar 1:9 F=480 mm Lens w/both caps, on a 5.5" Sinar lensboard. The glass is clean (no mold, scratches, fogging or separation). I did not examine it under a microscope. See images. I do not understand this lens. The apperture blades are very clean, open and close very easily, with moving a lever in the back, sideways. I have no idea how it works with a camera. Comes with two caps, front and rear, fitting perfetly. Everything is clean and seems to be working well. Selling it "as is", as shown and described. NO RETURNS. Please make sure you know what you are purchasing. Any doubts, please ask questions before purchasing. For local pick-up: Greenville (Greene, not Orange County) NY 12083. Thanks, Dmitri Belyi