Heliar or what?

[bracan]

Hello guys,
Another score. Unknown Heliar to me. No seral number, no any other numbers. Diameter of lens is 7cm and height is 10cm.
Some ideas?

[Paul Fitzgerald]

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

[bracan]

Thanks Paul, tommorow will check again.

[bracan]

Im still confused...on same barrel is f6,5 and Heliar insignia....

[Sevo]

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...

[bracan]

Maybe is some Voigtlander inhouse ptototype?

[Sevo]

Maybe is some Voigtlander inhouse ptototype?

The Heliar was still 50 years in the future when such a hand engraving would have been used.

[bracan]

Yep, youre right.

[Eric Rose]

Well that must be one heliar of a lens

[bracan]

Ok guys, fake or not?