I know what you mean. I cleaned out my sofa and found 5000 yen worth of 100 and 500 yen coins. My friend had a 500 yen coin bank, which when full held over 50,

I know what you mean. I cleaned out my sofa and found 5000 yen worth of 100 and 500 yen coins. My friend had a 500 yen coin bank, which when full held over 50,000. It was not a large coin bank.