Hi, I have a factory sealed Gen 1 PM Prime MISB. ITem is mint factory sealed. Box is about a c-8 with flap crease. Some people have asked if the toy is yellowed, not it is not. The yellowing you see is an additional piece of tape under the acetate window to secure the toy and prevent it from jiggling in the box. Even the main aectate window isnt yellowed, just the one layer underneath it. Toy is mint and NOT discolored in any way.