After opening, I stored it in a sleeve in a dark place. I have stored it for several years under amateur management, so there are no noticeable stains, but please refrain from purchasing if you are nervous about it. For packaging, I will reinforce it with thick paper on one side, and I plan to ship it via regular mail, but I will respond flexibly to your requests, so please feel free to contact me. Individual sales are negotiable / If you purchase it together with other items, I can offer a discount on the shipping cost.