DerbyDad03 wrote:

I've had these for 30+ years, just hanging around in the bottom drawer of a
old, narrow set of drawers I brought home from a dead relative's shop.

https://i.imgur.com/QSAZi4n.jpg

The whole batch weighs just over 1/2 lb. I'm guessing aluminum.

https://i.imgur.com/qfGHKa5.jpg

Back in the day, Center Line wheels used aluminum rivets. I had a set
that looked a lot like this:

http://www.wheelcollision.com/wccpix/3014.JPG

https://www.youtube.com/watch?v=uFqKxsTnNz0
http://www.stangfix.com/testforum/ga...8-7407950.jpeg
https://static.summitracing.com/glob...6704545_xl.jpg