Yokosuka?
This is a new one,, I was going through my really old stuff from when I was in H.S. and going to the junk yard looking for parts for my 510 and found this on a 510 I was pulling the brass distributor gears from.. I figured it was a cool vin plate, so I took it too! Now I'm looking at it today, and I've never seen one like this before and just noticed it says Yokosuka Japan.. What is it?