#2 is from Japan. It's made of silver (.600 fine) but probably isn't worth much more than bullion value (about $2) at the moment.
#3 is from pre-Communist China. It's probably only worth a dolar or so, but there are some scarce varieties in this series. We'd need to see nice closeup pics of both sides to determine the variety and date of this coin.
Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis