B&H 16mm Super D Proval 2" f1.4 Projector Lens (No 1)

item #ProjLenseNo1. (NOTE THIS WILL FIT ITEM #2)The rear barrel diameter is 52mm with fine thread cut into the barrel. The glass is clean and clear. This fits those big blue B&H 16mm School type movie projectors. The glass is clean and clear. Condition 10-.