I haven't sent letters with IRC's from another country. But I'm preety sure that you can buy IRC's from somewhere else than from your country, and they will work. I'm almost sure that the IRC's are the same everywhere. Hope that helped! Jack Sparrow's Sweety
Sorry if I repeat the explanation of themohawkgirl :) . So, IRC means International Reply Coupon. You use it if when you want to send a letter outside your counrty. For example, if you live in the USA and you want to send a letter to UK, you must use an IRC. I hope I helped you. :D Good luck with yo...