F/6.5, brass barrel, iris at center = Collinear III
cell spacing and iris placement all wrong for heliar, won't work.
remove the rear cell and compare to front cell, heliar will have very different sizes
nice looking lens
Thanks Paul, tommorow will check again.
Im still confused...on same barrel is f6,5 and Heliar insignia....
The inscription looks clumsily handmade, so it won't be Voigtländer official. By the time the Heliar was introduced they had been one of the major industrial players for decades, and had long been using engraving machines - and on my 1907 Heliar they already used a grotesque "machine" typeface quite similar to the one Leitz used on their lenses. So that engraving certainly is apocryphal - whether right or wrong on one or both accounts (of type and speed) is a different question...
Maybe is some Voigtlander inhouse ptototype?
Well that must be one heliar of a lens
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Eric Rose
www.ericrose.com
I don't play the piano, I don't have a beard and I listen to AC/DC in the darkroom. I have no hope as a photographer.
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