u/ConcertsAndCrochet

Just opened a brand new puzzle still sealed in plastic wrap and the inside of the box has some suspicious spots. The pieces are sealed in another plastic bag and look fine and there is a piece of paper inside that has the picture that also looks normal. I don’t see any evidence of water damage like warping etc. Is this mold?

Adding: in US-DC. Bought about 4 months ago and has been in my clothes closet on a shelf ever since still in its plastic wrapping.