I'm finding very little info regarding this camera on the web. My dad used this in Vietnam - my mom just dug it up and offered it to me, and will be sending it soon, so I don't have it in hand. I know it's from around 1957, German, 35mm, 45mm f/2.8 lens, and I can find some history about it, but I don't know whether it needs a battery, etc. If you have any experience with this camera, let me know! Thanks.