Quote Originally Posted by Mechanic688 View Post
Yes, most older keys are brass but a few are alum but you can tell the difference.
When I was a kid, back in the late-70s, my father used to make me "clean" the key machine in his hardware store so he could scrap the brass shavings. I must have swept shavings off of that machine a thousand times. I wonder how much old man made off of that exercise?