first delivery: on the one hand no new material, again packed. would be acceptable, but the entire envelope was massive moldy. had to wipe the outside while the smooth leather, but the cracks and rough inside you do not get clean. can happen, so back again and ordered new.
second delivery: time real virgin with welded box, but again mold on the half shell (less than in the first, but still unacceptable).
So at present seems to be a general problem (storage conditions, unsanitary conditions in the manufacture etc.)