Minilite lug bolts and dual weber setup

I picked up an old (1973) set of minilte 14" wheels. They are in ok shape but the guy only had 13 lug nuts. The lugnuts are very light (aluminum) and fit the wheels. Has anyone ever seen lugs like these? I found a minilite website and I plan on contacting them, but thought I would ask here too. I think it would be nice to have this style lug nut.

The guy also had this dual weber setup. If anyone is interested, let me know. The guy is local, super nice, and is trying to get rid of some old stuff. I have no interest in it but happy to help if someone needs it.