This is an interesting Goerz binocular, serial number 501251. The prisms have a little fungus or dirt to the left hand side and a minute chip to the very edge of the right side prism, completely outside of the field of view. The collimation is out and the eyecups are chipped. Goerz Berlin Armee Trieder 1908 D.R.P Binoculars.

1. Serial number to the binocular, thus the P. Stood for 'Private Number'. The number on my model is a very low 3 digit number. Wether this number is a serial production run number is not known, if it is, then the binocular I have must have been one the first.
2. Find great deals on eBay for! Shop with confidence.
3. On Goerz Serial numbers and dates. (former Goerz Tech.) Lens # 35 1902-1903 170 1903-1905 267 1906-1908 230 1908-1909 334 1911 -1914. Date of CP Goerz Double Anastigmatic (Dagor) Lens. Antique CP GOERZ Optical KENRO K2 LENS for Large format photography F10 This lens is a Goerz Kenro K2 Dagor. The serial number is 818668.
4. The Portrait Hypar Lens, introduced in 1912, made for working at full aperture. The unsymmetrical anastigmat of three elements is flare resist. It covers 5x7 inch fully open (f:3,5), stopped down also 8x10'. This heavy lens was very expensive, similar to that of the Cooke line and more than triple the cost of a Verito lens. The inflation calculator shows that $ 272 in 1916 are $ 6.375,- in.

C.P. Goerz

Berlin

Germany

Model VIIb, 75 mm

Lens Type:

Telephoto attachment. Variable separation.

For 3 - 8x magnification. Rack and pinion adjustment.

Serial Number:

186905 .

This was made in two versions for either hand or bellows cameras. The tube and elements could be purchased separately. Advertisements in the 1905 BJA list the VIIb as taking a primary lens with a different flange diameter to the example shown here. The 3' negative lens is also not listed as for use with the VIIb tube. A 3' negative suited a prime lens of 6', 7' or 8 ¼' focal length covering a 4' x 5' plate at low magnification and 12' x 16' at high magnification.

Carl Zeiss

Jena

Germany

45 mm

Lens Type:

Telephoto attachment. Fixed separation.

Helical focusing scaled to 6'. For quarter-plate.

Serial Number:

55260 .

The Zeiss Tele Objective consists of negative attachments, positive lenses and tubes which can be combined in various ways. The positive lens can be either a conventional prime lens such as a Tessar or Protar, or a specialist group called the Tele-Positve. Some tubes had iris diaphragms and shutters fitted. This example is a Tele-Negative attachment in a tube with removable focusing mount. The likely positive lens would have been a Tele-Positive of 135 mm focal length.

Voigtländer & Sohn

Braunschweig

Germany

97 mm

Lens Type:

Telephoto attachment. Fixed separation.

For 15 cm primary lens. 2.5x Magnification. For 10 x 15 cm.

Goerz Lens Serial Numbers Doreen

Serial Number:

Goerz Lens Serial Numbers 222

103244 .

Goerz Lens Serial Numbers Lookup

With:

Box.

Goerz Berlin Lens Serial Numbers

This is a conventional telephoto attachment consisting of a negative lens for mounting behind a normal objective. The attachment is for use with hand cameras such as the Voigtländer Alpin. It fits inside the bellows and screws to the rear of the lens panel. It was made in two sizes for quarter-plate (12 or 13.5 cm objectives) and 5 ½' x 3 ½' (15 cm objectives).

Hi Jacque:

To add to my friend's Sean's comments in reference to the C.P Goerz Berlin lens, a good friend of this page provided me with some guidance in selecting lenses for 8x10. And while some may seriously disagree, here is what he wrote on this topic:

--------------------------------------------------------------------- 'The Dagors are still popular due to their combination of small size and large coverage. Although the collectible market has driven up the prices in general, and especially for the Gold Ring, Gold Dot, etc. varieties, they can still often be found at relative bargain prices compared to equivalent modern glass. In some cases, there just aren't any modern alternatives that don't weigh 5x as much. In general, I have had good luck with Am Optical Dagors with serial number higher than 770xxx and Zeiss made Dagors from the 1930s - 1940s. Many older Dagors can also be quite good (but the quality seems to vary more), and I would avoid anything labeled as a 'Berlin Dagor'. These were assembled by Burke & James after WWII, and the glass used in them was horribly full of impurities. They obtained all these inferior old elements after the war as part of the liquidation of the German Goerz company, shipped them across the ocean, mounted them in barrels and shutters and sold them as 'Berlin Dagors' to distinguish them from the Dagors being made in this country by Goerz Am Optical (A separate company that had split off from the German Goerz sometime in the WWI timeframe).

All Goerz Am Opt. Dagors after 770xxx are of the same design and glass types. You can occasionally find very high serial number Dagors that don't have the gold rim or gold dot. They are every bit as good, and usually priced hundreds of dollars less. I have a suspicion that some of these were manufactured under contract for the US Military in the 1950s and 1960s. I have a 4 3/8' WA Dagor from 1961 that was originally part of a military field photographers kit that has a serial number above 800xxx, and it has a simple black barrel, even though I have an older 6 1/2' WA Dagor (786xxx) with the shiny gold rim and used to have a beautiful 12' Gold Rim Dagor with serial number 790xxx). Guess the military preferred the non-descript black barrels to the shiny brass ones of the Golden Dagors.

Good luck in your search for lenses for your 8x10. Other lenses to consider would be the Kodak Commercial and WF Ektars. They tend to be larger than the Dagors, and the Commercial Dagors have less coverage, but they are usually less expensive due to a lack of collector appeal. Also, in the longer focal lengths, the Red Dot Artars are great. They can be found occasionally in original Ilex shutters, but are more common in barrels (which can be re-mounted into Copal #3 shutters). I had a 16 1/2' Red Dot Artar that was my favorite lens when I used to shoot with an 8x10 Deardorff. Reasonably small, very sharp, and I just liked the focal length.' ------------------------------------------------------------------ I hope you and our other friends find this of interest.

-Henry T. Stanley
-- Henry Stanley (HTStanley@prodigy.net), June 23, 1999.