Fuji Superia 400
A while back I had a look at the original Olympus Pen, a half-frame camera from 1959. Here's mine, on the left, lurking behind an Olympus XA2:
They belong to different generations; the XA2 is electronic and automatic, and dates from the late 1970s, the Olympus Pen is manual everything and predates manned spaceflight. With 72 shots a roll it takes a while to finish the roll off, but by Jove I've done it.