I found Zeiss Ikon folding camera it says Nettar 515/2 in it it appears to be of WW2 vintage. Could this be worth anything? I am going to show it to my photographer brother but will not see him till the 4th of July. I believe it takes standard 120 film
Impossible to say, precisely. I could not even get you in the ballpark without a close inspection and some research. Lots of info on these can be found on the net. They made buttloads of these things so they are not rare, but that also means that many camera guys are familiar with them.
Does it work? Is the leather still good? Is the lens in good shape? You will need to know the lens design and the shutter design, before you can even begin to assess its value. The serial number will also help to determine when it was made and which specific improvements to the design were included in your camera.
I have seen working examples go for fifteen bucks, several years ago. Specific lens design, shutter type, film transport mechanism improvements, optical rangefinders and several other factors determine the value, in addition to the overall condition. I've seen desirable ones, with Compur shutters and faster (Tessar f/4.5) lenses, in pristine condition, go for close to a thousand bucks.
It's been years since I went to a camera show looking for goodies. The last few times I went, literally six or seven years ago, I was looking for professional equipment and did not even browse the collector models from the past.
It's a great find either way!
Here's a guy who collects cameras who also lists a
Nettar 515/2.