Hole in my pocket

I developed a bit of a penchant for these Japanese coins when I was out there. Something about a coin with no middle appealed to me, and before you get all Freudian I'm talking as a lapsed beader! The silver, as you can see, is 50 yen and the bronzy one is 5 yen. I brought a few back but not sure what I'll do with them. At least they helped out with a blip on a busy day.