Sold Antique brass lens Audouin, Rapid Rectilinear type (France, c1870) w/lens flange and Watherhouse Stops set

early brass lens from the French maker Jules Audouin, established in Paris in 1870; unusual black finish, Napoleon III style

comes with its original case, a Waterhouse Stops set (4 units, with leather case) and lens flange

engravings:


focal length: it seems to be about 260mm
diaphragm: it seems to be about f/8
f/stops: slot for Waterhouse Stops
height: 61mm
frontal diameter: 46mm
image circle: about 30cm (enough for an 18x24cm plate)
total weight: 300g

symmetrical optical design (4 elements, 2 groups)
it is a convertible lens: if the the frontal element is unscrewed, the lens gives double focal length and increased coverage

good condition for its age, it keeps most of its original lacquer
glasses: clean and clear
there is no fungus, haze or separation

price: $195

Shipping cost to Europe: $12.50
USA, Canada, Australia, China, Japan, and all other countries: $16.50

parcels shipped from Europe
(insured, registered, with track and trace on internet)

payments:
Bank Transfer preferred (Wise, Revolut)
PayPal also accepted

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