I have got a Zeiss Ikon folder in absoute mint condition (stunning, like new) and i am trying to find out its age. The model is Nettar 515/16, it has a Nettar-Anastigmat 1:6,3 F=7,5cm lens in a ACG Telma shutter with shutterspeeds from 1/25 to 1/125 plus T and B. There is also a serial number, K 318 on the side of the back that do not lead me anywhere.
The model and the lens/shutter combination seem to be a bit conflicting, the lens/shutter suggest it is quite a bit older than what i have found about the model.
Hmm.. done a bit more searching. I cannot find that the letter preceding the serial number corresponds to a year, if there are some system it is more complicated than that since i have found many cameras on auction-sites with the same letter but different year. I feel that i am back where i started, dating the camera to either just before the war or just after assembled from pre-war parts.
I have not links, but a french book, with many serial numbers (or letters) : "Les chiffres clés", by Patrice-Hervé Pont.
With Zeiss Ikon, the letter corresponds to a year (or, sometimes, to two or three years); this system was first used by Ica (then Ica became a part of Zeiss Ikon , in 1926).
That explains my findings. Yes i have come to know that this obscure(?) system was first used by ICA that later became part of Zeiss Ikon (the net is full of a wikipedia quote about it but no one explains the system or links to info about it). So even if it can differ on a couple of years, it looks to be a pre-war camera. From all my browsing around i feel it is around 1937 to 1940. Yet another sign of pre-war is that the Nettar lens is not coated. I will come back with some pictures of the camera.
I agree with the date. It's definitely prewar because of the use of the Telma shutter. It's not one of the earliest models, because of the shiny chrome pop-up viewfinder, the shutter release on the top deck and the sliding door over the frame window.
This is in excellent condition. I generally am skeptical of claims of "mint," but this one is as close to mint that I've seen. In any case, it's in excellent condition.
Hmm.. done a bit more searching. I cannot find that the letter preceding the serial number corresponds to a year, if there are some system it is more complicated than that since i have found many cameras on auction-sites with the same letter but different year. I feel that i am back where i started, dating the camera to either just before the war or just after assembled from pre-war parts.
A bit of an old post to respond to, but I am going to. The letter in the nuber DOES refer to a year but the 26 letters of the alphabet were recycled so a given letter could refer to several different years 26 years apart. As most models were not produced for more than 26 years, the letter is actually quite precise.