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This is an Orion-branded Erfle that was originally made in Japan, most likely by University Optics. This is the classic!
This is an excellent used 32mm Erfle eyepiece with 2-inch barrel and 31.5mm field stop. Barrel interior is blackened and threaded for 48mm filters. The lens is fully coated. Great low power, wide field views. It has a giant eye lens for easy eye placement, which is recessed from the top for better viewing.
Very lightly used. Metal and optics in clean and excellent condition. Comes in original box, but without end caps. Weight: 11 oz.