I have a Voigtlander Petzval, serial 2942. It's engraved "Voigtlander & Sohns, in Wein". Lens seems to date to around 1849. Because "Sohns" is spelled "Sons", and it says "Braunschweig" instead of just "Wein," I suspect this was a "blank" Petzval that at one point was engraved by someone in an English speaking country. Note there are some other differences in the engravings between my lens and the other one, more than you might expect from a small shop and lenses supposedly made just a few years apart. I'll also mention that on the lens you showed the lens hood is knurled at the base to make it easy to uncrew, but the hood on my lens has no such grooves. I also included a photo of another Voigtlander I own, from around 1864. Lens hood isn't knurled on that one either.
Kent in SD
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