I just picked up a Dagor lens, and was reading up on it. I couldn't find any reference to date it by serial number (322xxx), or any reference to date Compound shutters (371xxx). However, I read that when Zeiss Ikon bought out Goerz in 1926, that ended the production of Dagor Berlin lenses. Is that true? That would likely put the lens between 1914 and 1926, I would think.
Kent in SD
In contento ed allegria
Notte e di vogliam passar!
315735-320000 1914-1918
751240-756909 1927-1937
Which would , I think, put your lens as one of the first out the door when the Goerz factory resumed post WWI production.
This from The LF Home Page, just click on LF Home Page on the blue banner ^^^up there^^^
Go to More on Classic Lenses and scroll down to
On Goerz Serial numbers and dates
Goerz Amer. Optical Co. Serial #'s from
Eddie Bolsetzian (former Goerz Tech.)
There is a lot of information on the LF Home Page and I know that I owe a debt of gratitude to QT and the contributors for all that knowledge being available.
"I would feel more optimistic about a bright future for man if he spent less time proving that he can outwit Nature and more time tasting her sweetness and respecting her seniority"---EB White
Ah yes, found that. Lens is not a Goerz AM though, but is Goerz Berlin. Or, did they use the same serial numbering?
Kent in SD
In contento ed allegria
Notte e di vogliam passar!
IIRC, Dan Fromm who often posts here has the low down on Goerz Berlin serial numbers up to the Carl Zeiss Jena merger, when the Goerz serial numbers were aligned with Zeiss production. If he doesn't chime in, you might send a him a PM.
"I would feel more optimistic about a bright future for man if he spent less time proving that he can outwit Nature and more time tasting her sweetness and respecting her seniority"---EB White
Dan Fromm's post regarding Goerz Berlin serial numbers is in this thread:
http://www.largeformatphotography.in...mbers-(Dogmar)
Whoa! That's from 2008!
"I would feel more optimistic about a bright future for man if he spent less time proving that he can outwit Nature and more time tasting her sweetness and respecting her seniority"---EB White
They do appear similar but how close I don't know, I think maybe Blocks of numbers were assigned to Goerz AM Opt. The outbreak of WWI split Goerz AM Opt (Goerz 2 sons) completely from CP Goerz (the father) in Berlin. The sons had emigrated in the late 1800's and become US citizens. So when the US entered the war Goerz AM Opt was supplying the US army while CP Goerz Berlin were supplying the Germans.Originally Posted by Two23
Your Compound shutter was made in the same period during WWI, I have a 1913 120mm f6.8 Dagor (CP Goerz, Berlin) in the last of the small Compound shutters, they are usually in Compurs by 1913/14. The Compound SN's match the Compurs.
Ian
That matches up with what I know fairly well. And it is the Dagor 120mm f6.8 I picked up from cupog on ebay. I'll use that on 4x5 until I can snag an f9 version for my 5x7.
Kent in SD
In contento ed allegria
Notte e di vogliam passar!
It just covers 7x5 when stopped right down. These are nice lenses with good contrast, actually surprisingly good for their age.
Ian
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