Quote Originally Posted by rca987 View Post
Just found out today that the collapsible antenna on older radios and stereos are brass too.

zipper pulls and belt buckles are typically aluminum too.
I put every small and extension type antenna in with the yellow brass. I'm not talking large roof antenna.

I don't think I've ever seen an aluminum zipper pull or belt buckle, but I've seen lots of brass ones. If you scratch them and the scratch shows a silver color, it's probably die cast, not aluminum. AL is too soft a metal for those uses. Still, any zipper, I'd think brass.