https://www.reddit.com/r/Dolls/comments/14d6zn6/mould_on_dolls_legs_how_can_i_get_rid_of_it/i think it might be mold rather than market stains because it was randomly all over the legs like this and the other dolls from this lot didn't have this, just the one with rubber legs. some of it is gone (wish i took before pics) but there are some very persistent spots left