Voigtländer Porträt Objektiv Brass lens

antique brass lens from the renowned German maker Voigtländer, from circa 1853 according to its serial number
(source: "Objettivi Fotografici nel XIX secolo in Germania e Austria" Corrado D'Agostini, page 132)

engravings:

Nº 4692
Voigtländer & Sohn
in Wien und
Braunschweig

Petzval optical design: 4 elements in 3 groups, a cemented doublet objective in front and a separated achromat behind

about 250mm f/3.2
height: 166mm
frontal diameter: 96mm
image circle: about 22cm
total weight: 2.100 kg

signs of use, still reasonable good condition for its age (see pics), it keeps most of its original lacquer, nice “patina”
glasses: clean and clear
there is no fungus or haze
rack-and-pinion moves smoothly

as other lenses from those times, a slot for Waterhouse Stops was added, in order to allow to use it with small diaphragms

comes with 3 Waterhouse Stops, lens cap, lens flange

shipping method: Post Office or GLS (depending of your country)
all parcels registered, with track and trace on internet