Last version, full-sized Nikon 50mm f1.8 AIS lens (NOT the pancake version). I purchased this lens from a professional EBay vendor--it has been internally cleaned and relubed.  Mint condition.  NO optional or mechanical deficiencies.  NO haze, no fungus, no separation, no cleaning marks or scratches.  Focus is smooth--aperture action is dry, oil-free and precise.  With generic from lens cap, Nikon rear lens cap.