A genuine made-in-USA optical gem from back in the days of the slide projector. Viewlex of Long Island, NYC, NY designed this Luxtar H Anastigmat, fully anti-reflection coated lens for an unknown projector. If youre not rejuvenating a relic, maybe you want to disassemble- it contains 4 lenses: 129 mm f.l. positive meniscus and 129 mm f.l. plano-convex (both 47mm diameter), -47 mm f.l. double concave and 73 mm f.l. double convex lenses (both 38.1 mm diameter), field stops and spacers. All lenses are anti-reflection coated on both sides. The -47 mm f.l. lens has edge damage in some of the items (and could probably be replaced with our L5362 if desired). Some of these items will require disassembly and cleaning. Unused.