Anybody know anything about these? I found one at a flea market today. Picked it up for $5. Arpeture and shutter works. It has the 50mm coated Cintar lens on it. On the back, there is an ASA selector (does nothing but help you remember what you loaded). I was more curious than anything. Anybody know how old this thing is? I know they were made from '39-66 (I think it was) and the earliest had uncoated lenses from before WWII but the ASA dial is what is throwning me dating it.