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http://uploads.tapatalk-cdn.com/2016...13feceae7e.jpghttp://uploads.tapatalk-cdn.com/2016...b4bc5b87f3.jpghttp://uploads.tapatalk-cdn.com/2016...d15f2bb136.jpghttp://uploads.tapatalk-cdn.com/2016...81c10a4bba.jpg
Couldn't find any information about it.
There's no iris.
Who knows the lens?
Thanks.
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I know this lens because I saw it on ebay recently!
Must be pre-ww2, as I don't think it is post reunification.
If it isn't part of a scientific or industrial apparatus which uses alternative inter-changeable achromats, perhaps part of a projection telescope?
The font used looks like the one they used in the 1920's and early 30's.