Mamiya K/L 127mm f/3.5 lens. The front element is clean, but there is clouding on the rear element. Offered as junk, assuming repair is needed. The shutter fires crisply at all speeds, without sticking, even at 1 second. As mentioned by another seller, balsam separation can be fixed for around 10,000 yen, and I believe the clouding is simpler and can be fixed with cleaning, etc.