Who can help identify this brass lens?

[Knackebrod]

Hoping someone can help me identify this lens. Unfortunately these low res pictures are the only thing I have at this moment.
Maybe a Voigtländer 290mm?

249260
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[J. Patric Dahlen]

Wait for better replies, but if I saw it I would suspect that it's a repurposed projection lens, maybe a petzval. No iris or slot for stops, the focusing wheel removed and there are signs of it having been heated, maybe for soldering the lens shade on.

[Knackebrod]

Wait for better replies, but if I saw it I would suspect that it's a repurposed projection lens, maybe a petzval. No iris or slot for stops, the focusing wheel removed and there are signs of it having been heated, maybe for soldering the lens shade on.

Thanks Patric! That sounds like a possibility. There is no markings on the lens.

[Steven Tribe]

Well it being mounted with flange and brass sleeve on a “1900” period Studio bipost setup suggests it could be pre WHS era Petzval or made in the 1860’s/70’s by the French maker who didn’t fall for the English invention!
The various sections of differing “patina” surface appearance suggest that it was first used on a more primitive camera with the tangential drive intact. Then moved over to this “modern” camera with fine focusing movements and the pinion drive removed and exposing/covering different section of the brass barrel to the atmosphere!