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Leitz catalogued the black paint rigid Summicron as 11117, alongside 11818 for the chrome lens, and made it in far smaller numbers; it is one of the harder 1950s M lenses to find complete and original. The optics are those of the rigid Summicron introduced in 1956, a seven element f/2 with E39 filter, ten blade diaphragm and one metre minimum focus, in a brass barrel. Paint over brass wears through to yellow metal at the edges rather than to bright chrome.