This is likely the first generation XR Rikenon, made by Tomioka Optical. [Basic Information] Model Number: Ricoh XR Rikenon f2 50mm [Included Items] Front cap Rear cap [Condition] Lens: Has some minor dust, and balsam separation (surprisingly, it still takes good photos as shown in the sample images). Appearance: Please check the photos. [Operation] The aperture blades move smoothly, and it appears to be functioning normally. The sample photos were taken with a PENTAX ME, which is listed separately. If you would like to purchase the set, I will offer a discount of ¥9,000. Due to its age, this item is considered junk and is not returnable. The price has been set accordingly. Please feel free to comment with any price negotiations!