There is a slight stain on the edge of the backing card, but the sticker itself is clean. However, since it is old, the adhesive strength of the sticker is unknown. Nurse Kitty-chan and Doctor Daniel-kun are quite rare, I think. How about it, collectors? As a bonus, I will include one more non-sale sticker (photo 3). I will reinforce it with cardboard, put it in an envelope, and ship it via regular mail. Thank you very much.