USPS stamped postcard question

These are retired postcards from 2003. The book was sealed when I bought it. Since no postcard ships for 23 cents anymore how do I go about postage with these? Thanks


@PleiadianDragon You can add postage that will bring the total value to the current rates (total value 35 cents for a US destination, and $1.20 for international destinations).

Here is an example of some stamps (“definitive stamps”) you can buy at the PO to add value to the pre-printed stamps on your postcards (which are very awesome, by the way!)


You are correct. Great reply!