#Kameken YASHICA Medical 100 100mm Automatic Aperture (f4-22) C/Y Mount When looking through the lens, you can see small spots that look like coating peeling or mold. Judging from the sample images, there don't seem to be any particular problems. This lens is mainly used in medical settings, such as for oral photography. Since it is mostly used in medical facilities, it is a rare item on the market. Also, many of the items in circulation are missing the strobe cable or don't even flash, but this item seems to be working properly. The aperture is stopped down to f22 when the working distance is shortest, and it opens to f4 when the working distance is longest. That information is described in the included specifications, so please take a look. Of course, you don't necessarily have to use the strobe, so please use it according to your shooting environment and purpose. If you purchase multiple items, I will offer a discount on the shipping cost, so please contact me before purchasing. I have confirmed that there are no cracks or breaks, but I cannot check for minor scratches due to manufacturing, shipping, or normal display in stores, so please understand that this is a used item. I store it in a clean condition, but I will disinfect it with alcohol before shipping. Regarding the product, I also sell it on auctions, flea market apps, and in person, so the stock may run out depending on the timing. Since the nearest post office is closed on weekends and holidays, if you win the bid during that time, the item will be shipped after the holidays. Thank you.