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Leica, Leitz Time Machine -- feel free to post your finding here

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The more I learned the more respect for those geniuses.

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a.noctilux
a.noctilux

This website is a must (sorry only in French ...) https://lavidaleica.com/gallery/v/VintageAds/French/?g2_page=3  

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luigi bertolotti
luigi bertolotti

The ad quotes only the Screw mount items... so it's from a very early stage of introduction (1952) : in those times "Germany" was still a name that didn't sound fine for many Americans.... so they pre

luigi bertolotti
luigi bertolotti

Indeed the "air elements" were even evidenced inLeitz' ads :

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But (always quoting Cavina) the 2nd air space (3rd-4th el.) was implemented only in 1952 with th

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Leica Photography v05n04 Winter 1952 D.D.Teoli Jr. A.C.

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Leica Photography v05n04 Winter 1952 D.D.Teoli Jr. A.C.

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Leica Photography v05n04 Winter 1952 D.D.Teoli Jr. A.C.

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Leica Photography v05n04 Winter 1952 D.D.Teoli Jr. A.C.

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The following commercial ads provide some valuable information of first version Summicron 50mm lens also mentioned United Slates patent number 2,622,478.

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