I purchased this lens in excellent used condition from Map Camera about three months ago. While there are some minor cosmetic scratches on the exterior, the optics are clean and the functionality has been confirmed. It seems there are versions of this lens made in China and Japan, and this one is made in Japan. Also, the lens cap is a Lumix cap, not an Olympus one. Please feel free to ask any questions in the comments. High-performance 12mm f/2.0 prime lens, 46mm filter thread, Micro Four Thirds mount compatible. - Brand: OLYMPUS - Model: M.ZUIKO DIGITAL 12mm f/2.0 - Filter Diameter: 46mm - Focal Length: 12mm - Mount Type: Micro Four Thirds Thank you for looking.