I have a Kahles 2.5x scope that I just got in misc gun stuff. Small tube and has only one adj knob and behind this is a slide. I think for focus. It has lever quick detach rings and looks to be for 3/8 dove tail base. The tube has light rust. I wouldn't mess with it but the optics are amazing and it has a neat reticle. I have no experience with Kahles scopes. I'm wondering if this is WW2 military and is it worth enough to fool with. Any info appreciated. I haven't messed with adj yet until I figure out best way to clean it up.