The coins don't have to be 90% silver. The British 1944 2 Shillings in the first post is 50% silver. I suppose a copper or aluminum coin would also work. Gold too. But why?
If you'd rather insult me than have a discussion, suit yourself. Nothing ventured, nothing gained. I'm not arguing with you, just asking questions and I even ended my last post by saying we'd probably agree more than disagree on most of this topic. If you would like to address anything I raised in my post, you're welcome to PM me.