[Leica] 50mm rigid Summicron

[len-1 at comcast.net (Leonard Taupier)]

Phil,

The only numbers I know about are inscribed after the M (meters)  
symbol after the focus infinity symbol. My current 50 Summilux has a  
14 which corresponds to 51.4 mm. My 50 Summicron has a 22 which is  
52.2 mm. My 75, 90 and 135 have numbers as well. My older DR and  
collapsible don't have numbers that I can find on the outside. The  
number info is in the appendix of the "Leica Lens Compendium" by  
Edwin Puts.

Len

On Nov 27, 2006, at 10:10 PM, Phil Swango wrote:

> I just unscrewed the optical unit of my rigid v.2 Summicron and  
> could see
> numbers hand-engraved inside the mount.  One was the number 53 and  
> the other
> was 16+.  I think 53 refers to the focal length.  The same is true  
> of my LTM
> 90mm Elmar which is inscribed in pencil with the figures 916  
> (91.6?) and
> 0130.  Anyone know more about this?
>
>
> -- 
> Phil Swango
> 307 Aliso Dr SE
> Albuquerque, NM 87108
> 505-262-4085
>
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