Thorney,
it's probably from Burke & James in the 1950's, they bought up all the Goerz stock left over after the big German merger in the 1920's. they also coated most of the lenses they sold, be careful with it, it's softer than modern coatings..
Have fun with it
It's definitely not one of the infamous B&J "Berlin Dagors". Those lenses were assembled using old, loose, and often poorly matched, elements of dubious quality. They were sold by B&J as new "Berlin Dagors" and did not contain the word "Goerz" anywhere on the lens. If they would have, they would have been sued to high heaven by C.P. Goerz AM. OPT. CO.
Lenses made in Germany prior to the German Goerz being absobed by Zeiss-Ikon (ca. 1926) are labeled: "C.P. GOERZ BERLIN".
Lenses made in Germany after the Zeiss merger are labeled: "Carl Zeiss Jena" and "Goerz-Dagor".
Lenses made by the American Goerz company were engraved with a number of different designations over the years. The lens shown above is definitely a pre-WWII US made Dagor. The simple "GOERZ DAGOR" was the engraving style they used at that time. Later, possibly post-WWII, perhaps a little earlier (I'd have to comb though old catalogs to nail down a date), they switched to labeling their lenses "C.P. GOERZ AM.OPT.CO". This designation remained until around 1963 or 1964 when they changed the company name and labeling to read" "GOERZ OPTICAL CO. INC.". And then there were the later Kern made Dagors during the Kollmorgen (early 1970s) and Schneider (1970s and early 1980s) years. Those are easy to tell as they are all labeled "Lens made in Switzerland". There may have been other permutations, especially in the very early years of the American Goerz company, but those are the main ones I know of off the top of my head.
As I stated above, any Dagors assembled from loose elements by Burke and James are labeled as "BERLIN DAGOR" absent the word Goerz.
The specific lens pictured in this thread is definitely decades older than the shutter it is presently mounted in. As others have stated, the shutter is not original. It's definitely a remount. Also, the date of manufacture of the lens pre-dates commercially viable coating technology by many years. So, if it is coated (it doesn't look like it is in the attached photo, but it's impossible to tell for sure form a small jpeg image), it was coated years later - possibly at the same time the lens was mounted in the shutter. If it was retrocoated, the coating (and shutter mounting for that matter) may have been done by B&J. It may have been done by C.P. Goerz AM Optical, or maybe someone else. I have seen genuine Goerz lenses that were retrocoated by B&J. I've even seen one in a box that contained a little slip of paper stating that it had been coated by Burke and James. Although coating reduces flare and increases contrast, uncoated Dagors are perfectly usable. The Dagor is a cemented design. So, it only has four air:glass interfaces (compared to an Artar or WF Ektar that have eight air:glass interfaces and benefit much more from coating).
Kerry
, i.e. no "W.A.", or "Gold-Dot," .... : This 72 degree Dagor (90 degrees at f 32) was sold as a 6.5x8.5" lens (wide open) which was however supposed to be able to cover 11x14" (!) at f 32......(Goerz 1913 catalogue).
