Sold Antique brass lens Dallmeyer Rapid Rectilinear (UK, 1884) w/lens flange

antique brass lens from the English lens maker John Henry Dallmeyer, established in London in 1860

engravings:


focal length: it seems to be about 290mm
diaphragm: it seems to be about f/7.5
f/stops: slot for Waterhouse Stops
height (with lens hood): 70mm
frontal diameter (lens hood): 58mm
image circle: about 40cm; even that it was intended for 8½ x 6½ plates, its coverage is still enough for a 10x12" plate
weight (with lens flange): 255g

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

excellent condition, it keeps its original lacquer
glasses: clean and clear
there is no fungus, haze or separation
comes with lens flange

price: $225

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

The serial number is roughly 1883/4. It's an 11" f8 lens, it covers Whole Plate 8½" x 6½" (as marked) at wider apertures and 10x8 at smaller apertures according to Dallmeyer's own adverts.

Ian

According to the Dallmeyer archives, this lens was made in 1884, as saying in the title.
Dallmeyer was established in London in 1860.

And, according to its inscription, the lens was intended to 8½x6½" plates, as saying on the description.