Alfons has some great pictures of a subminiature camera that was once found and bought in Japan in the late 50’s.
There are a couple of stories tied to that camera, but the first one that sprung in my mind was the one of the photo store assistant who had never seen such a small camera and then asked one of my sisters if our dad was working for a secret agency. Naturally, those kind of questions could only be asked in and around the mid-Eighties when the Cold War was at its peak.
If you think about it: Stupid question that was, naturally. Would a spy bring a miniature camera to a store?