Olympus Pen cameras had a very long run, spanning throughout the 60s. They were all half frame, which meant a roll of 36 exposure 135 film would yield no less than 72 frames! In order to get normal horizontal framing you had to turn the camera on its side. The truly unique thing about this EE is that the electric eye senses the amount of light and automatically adjusts the shutter speed and even the aperture, and all of that without a battery! Quite an accomplishment! I got mine for $3 and have enjoyed using it on occasion.
Here are some photos taken with my Pen-EE s.