This is a Showa Shell cap. I've used it a few times, but it's been stored away since then. As you can see in photos 3 and 4, there are slight, faint stains from use. Other than those spots, I think it's in good condition. I have a cat, so I will clean off any cat hair as much as possible before shipping via Nekopos. Since it merged with Idemitsu Kosan, I think it's difficult to obtain now. Please feel free to comment if you have any questions.