Many of us who love beautiful stamps know that you can use a variety of stamps to add up to or exceed the current rate for sending a postcard. You are NOT required to use the basic International stamp that your country issues. This means, for example, that instead of using the Round Global USA stamp, US Postcrossers can use a variety of Forever or other stamps to add up to the current rate to send a postcard: $1.50. I know this to be true in the US, UK, Netherlands, Germany, and Austral
How Many Stamps Do I Need? - US Global Mail
Does any country REQUIRE you to use a certain stamp for mailing
How Much Postage Do I Need? — Little Postage House
Postage for Square Envelopes
3 Ways to Put a Stamp on an Envelope - wikiHow
How to Make Vintage Wedding Stamps Work for Your Invites
Does any country REQUIRE you to use a certain stamp for mailing
What's better than maps or stamps? Maps on stamps! - Big Think
How to Send a Letter or Postcard: International