Money with a Hole in it
I was reading your page on Japanese coins and you said you don't know what the holes in the coins are for, I think this is the answer. With a hole in the middle they could stack the coins on short metal rods so they could easily grab however many were needed when giving change. I heard that somewhere although a long time ago so it's a little hazy, but it seems to make sense.
A comment by Uichee-san:
The Japanese adopted it from the Chinese (just as they adopted Kanji, Buddhism, etc.), who made coins with square holes in the middle starting from the Qin dynasty (maybe 2nd century B.C.). For more information on this, see the following related websites:
But how did the Qin come up with the idea of making a square hole in the middle of the coin, then? Hmm...many people believe Evan-san's theory, but I think there are several possibilities:
1. Evan-san's theory
2. They may not have had very much bronze, so those who crafted this money may have made a big hole in the middle of the coin to save up and make more bronze items (including more coins)!
3. The half-tael was the original coin, on which many other East Asian coins were based. Maybe the first half-tael was dented!
4. Could the Chinese have used them as rings for their fingers, though today's Japanese version isn't as convenient for the purpose?
5. If you look at the half-tael on the first of the above-suggested pages, you can see that on the left side of the hole there's a sickle and on the other, a trident. The hole might mean digging a hole into the ground. Sickle, trident, hole--all of them together might symbolize hard work, as does the communist symbol!
Because my grandfather worked with the Japanese army in Japanese-occupied Burma for quite some time (though he's not Japanese at all!), he had left us two ju-en coins and anot