Rare Item Nikon Nippon Kogaku K.K. F-mount Rear Cap @4483 Excellent condition. *Regarding precision instruments and lens optical products* * I do not have expert knowledge, so please purchase after confirming the images. * We carefully check the optical system and cameras, but we cannot confirm everything perfectly, so please make your judgment based on the images. * We do not use strong light to check the optical system. We describe what can be confirmed with normal light and visual inspection. * We do not test the lenses with a real camera body. * We do not check for obvious overexposure, so please understand. * We perform maintenance and cleaning, but we do not guarantee perfection. *This is only the subjective opinion of our maintenance staff, so please use it as a reference.* Please understand that returns based on condition are not accepted due to individual differences in the condition of scratches and dirt. Please consider the product images. We will consider a discount for multiple purchases, so please feel free to comment.