Vintage shops 1960s Zeiss B50 Magnification Close Up Filters Made in West Germany

Product Name: Vintage shops 1960s Zeiss B50 Magnification Close Up Filters Made in West Germany
Vintage Voitlander 1960s Zeiss B50 Magnification Close Up Filters Made in West Germany. These filters were to achieve telephoto and macro results with Zeiss lenses from the Cold War era. I know they can accommodate the Skoparex 35mm, Ultron 50mm, Dynarex 90mm, Dynarex shops 135, and Dynarex 180 but I think they probably works on some of the Rollei Versions and potentially Hasselblad. I think the B50 bayonet mount was pretty ubiquitous in west Germany in the 1960s. I only used one of these filters for one shoot. They are in mint condition and even come with the original Zeiss cases. A collectors item or can be used by photographers with vintage German lenses.