Mark, the lens in your photo is a C.P. Goerz Berlin Dagor from the mid to late teens of the last century.I have it's earlier twin, #226383. It is a real Goerz lens; the B&J bastard Dagors ALWAYS have a joker (such as "series III" when the German would be "serie", focal length in inches, etc.) in the markings that betrays their illegitimate origins.
I also have one of the last CPG Berlin Dagors made before the merger, a 30 cm marked "C.P. Goerz Berlin Dagor F:30cm 657010" in a Compound shutter.
Believe it or not, the B&J bastards are not always junk. I know of a 10 3/4 f7.7 (the f7.7 signifying that it is a very- pre 1895 or so- early set of cells, remounted) that is every bit as good as any Goerz production Dagor. And it is a real Dagor, just remounted by someone who didn't alwys do a great job. The Berlin Dagors had a bit better QC than the NYC Dagors. Goerz NY seems to have had some troubles in that area at one time.
Edit - there are two different lenses in the photos you posted. One has aluminium/alloy cells, the other has brass cells.
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