I have to disagree on that. I LOVE looking through my grandma's coin collection. She has coins from several countries, some from the late 1800s. They are among my most cherished possessions.

I don't think they have much, if any, commercial value, but who knows. I am into history, however.

I suggest you save them. Trying to convert small amounts of foreign currency into your local currency will result in big commissions and hardly net you anything significant. You never know if you or your kids might be interested some day.

If I already have a good stash of a particular currency, I tend to donate it to the UN charity on board the return flight.