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OLD BRASS BAUSCH & LOMB 10 INCH F5 PETZVAL? LENS LARGE FORMAT PHOTOGRAPHY:
$268.00
I think this Bausch & Lomb 10 inch lens might be a Petzval. It appears to have two air separated elements at back (I unscrewed to show) and a cemented element at front - there appears to be a little balsa separation at edges.
This lens no longer has a diaphragm or adjustable aperture (blades not there) but could be used I guess with waterhouse stops. The glass is pretty nice. A couple bubbles and some dirt but no real issues other than that.
Slight edge bend at rear of barrel. See pictures for more cosmetics of the exterior.
Packaged for shipment this weighs 2 pounds 11 ounces.