Dating my Dagor

[Randy H]

And also, is it worth the $20.00 spent on it?
I have searched the serial number lists, and this one seems to be stuck in the middle about 1910, and no numbers match.
Serial number is 228XXX
Goerz Dagor 7 inch f6.8 series III no.2
It is immaculately clean and clear. The paint has long since mostly gone away, but the lenses don't even appear to have any cleaning wisps. No balsaming, etc. Front and rear serials matching. Fantastically clear.
Any information, good or bad, is much appreciated.

[Ash]

AFAIK Dagor's have a nice rep. I have one, but I've yet to pull some photo's from mine, where did you find the serial number lists?

If I were you, test it out, it's gotta be worth $20 in that condition

EDIT: found this link http://www.largeformatphotography.in...c-experts.html

[Randy H]

That list and this one

http://www.bigshotz.co.nz/schneider.html

[Ash]

mine has two serial numbers.

Doppel Anastigmat DRP no74437 Serie III/2 f=180mm no96232

[Ole Tjugen]

Ash, the "DRP" means "Patent". So the number immdiately following that is the patent number. So yours is a German lens, and the serial number is one of C. P. Goertz's. Not Goertz Am. Opt. Co. But is it says only "Doppel Anastigmat Serie III" and not "Dagor", it's 1909 or earlier.

Randy's lens is likely to be a US product, which means 1910.

Anyway they're nice lenses, capable of very good results. With only four surfaces the lack of coating makes no big difference.

[BrianShaw]

Randy, that was a rhetorical question, wasn't it? How could you possibley go wrong for 20 bucks. Go ahead... take a picture or two with it. If you don't like it you can probably make your money back with no problem. Even if you throw it away, or give it away, you won't be out much!

In shutter or barrel???

Brian

[BrianShaw]

Here's the patent drawing for your lens, Ash. (God love those Europeans that make patent information so easy to get via Internet!) The rest of the patent is in Deutche... which I'll be happy to send to you if you PM me a e-mail message.

Brian

[Randy H]

In an operable optimo. Sounds fairly close. aperture is still good. a bit stiff, but who knows when used last. I guess I was needing assurance that I didn't just spend 20 bucks on a throw-down. I realize there are Dagor-fans out there, but the only other Goerz I have had was a dog of a dogmar.

[Ash]

Brian, many thanks for that patent design. And sorry, irony is so difficult over the internet!

Randy, the aperture diaphragm is very stiff on mine, but it's not a problem in general use

[BrianShaw]

And sorry, irony is so difficult over the internet!

Ha... how right. Just like sarcasm, I suppose I'm a bit of a "patent junkie" and I like how hte European Patent Office allows download of patents, where the US Patent Office lets you look at the patent but you have to buy a copy. The cost is small, but...