Very nice Hasselblad A16 back with mask, produces 645 images, in Ex+, very clean condition. This back works perfectly. I just tested it with 400 speed film in full sunno light leaks, excellent frame spacing. (Reduced price $95 plus shipping.) I will consider trading this for LTM (Canon 50/1.8 or...), Canon FD lens (I've got 50s pretty well covered), or Nikon manual, pre-ai is good (macro, 35/2 O; again, 50s pretty well covered). I'm open to ideas. PM me if your interested.