Can I use these USA First Class stamps for sending letters to other countries?

Question

The stamp has the liberty bell and just says USA FIRST-CLASS FOREVER. I've never used stamps without the little cost in the corner (you can tell I don't use the postal service very often). So can I use them if I'm mailing something to Spain? And how many would I need for mailing 2-3 cards in one envelope?

Answer 1

Of course! But make sure know how many you need to include. I would check with USPS on that.

Answer 2

Just as a guess, i'd say 4-5 depending on the weight.

Answer 3

No.  Stamps for international mail must have the monetary amount on them.  The stamps the USA issues (with no monetary amount) when changing rates are for domestic mail only.