NEW Nice MC AUTO-BEROFLEX 28mm F2.8 M42 Mount Wide-Angle Japan BER01 | eBay
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Tomioka MC Auto-Beroflex 28mm F2.8 Wide Angle Prime Lens M42 Excellent Japan F/S | eBay
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Amazon.com : M42 Lens to Nikon Mount AF Confirm Focus Confirmation Adapter Infinity Focus Glass for Russian Helios Jupiter Mir Lenses for Nikon F Mount Cameras (Nikon D5000, D7200, D850, D40, D5300
M42 Screw Mount SLR Lens to Nikon F Mount SLR Camera Body Adapter – Fotodiox, Inc. USA
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BEROFLEX Auto W.W. 35mm F2, 8-M42 Lens Made in Japan | eBay