I found fake coins at a leather shop to be used as conches on belts and stuff. I used a commemorative half dollar one to cover a hole in my firewall. I don't have a pic but here is a dollar one I used for my light switch knob.

"It's just a phase. He'll grow out of it." Mama, 1964

1956 Chevy 1/2-ton 3100
1953 Chevy 6100 "The Yard dog"
1954 GMC Suburban Now with a new proud owner.