USSRPhoto Wiki Catalog
Fed close up lens.
This is a two dioptric close up lens made before WWII, probably by Fed.
About the "goggles" (pict.2), please have a look at the Princelle, p273. The special finder shows the same mark.
I found this close up lens on my Fed 1a (1935). Jacques M. collection.
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Obviously, Jacques M. is wrong about the production factory as this factory logo is NOT a Fed factory logo. It would be reasonable to think that this optical part was produced at Izyum Optical and Mechanical Plant, Raisin, Ukraine. (Lenny)