I got my Nintendo coin stickers today from Rich at ThisOldGame.com.
I ordered one white set for my Popeye, and one yellow for my future Donkey Kong should I ever get one. Here are the coin mech stickers, complete with dirty coin door:
I haven’t stuck the larger sticker below the control panel yet, because I plan on restoring the cabinet someday.
If you have a Popeye or a Donkey Kong, you need to go buy these now!