I've dug a bit deeper into the collection and have come up with some ancients. USA ancients to boot.
I don't know a lot about this lens. It's a big lens for an aplanat ~ Rapid Rect. It's approximately a 14" focus lens.
What I don't know is coverage. The wheel stops begin at f16 and the glasses have quite a curvature. This may be a mammoth plate wide field type. An ordinary RR starts at f8.
$895 includes shipping in the U S of A.
Whatever it is, it's gorgeous.
