different collapsible sonnar 5cm f2 no serial number

randy6

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Joined
Dec 31, 2006
Messages
147
Location
Florida
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I have a collapsible sonnar 5cm f2 made without filter threads uncoated only marked sonnar without a serial number I had it cleaned inside the barrel its marked with an upside down v and the number 420 looking for a zeiss historian to shed some light on this lens
 

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randy6

Member
Joined
Dec 31, 2006
Messages
147
Location
Florida
Format
Multi Format
The retaining ring on the rear element is different then others
 

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E. von Hoegh

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Sep 14, 2011
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Location
Adirondacks
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It looks like the mounting and aperture ring are normal, but the optical capsule is very different from mine, a 1936 version. Maybe a prototype that escaped? It looks like something is missing on the front mount in front of the aperture ring, and the name ring has tightening slots in it unlike mine.
 
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