Ran the image through TinEye and nothing found like it.
Looking at the backside image I see 5 wires and they are grouped in two and 3. This is the classic Selsyn grouping for a sender and a repeater. Connect them together and apply A/C power at the sender and they are electrical lock in rotation. Move one and the other follows.
I would have to find one of my engineering books to get more details as the last time I worked with them was in the early 1980's