If you use some of stamps on the sheet and want to return rest of stamps, YES, you can return used sheet. We need to be sure, Sheet serial number is our mailed sheet.
These stamps can use for USA address includes US territories and International US Military Bases. You will see on the photo each stamp has different and unique QR Code mark. The item "Priority Mail Postage $6.65 Stamps, face value $159.60, 24 pieces" is in sale since Monday, April 23, 2018. This item is in the category "Stamps\United States\Postage".
The seller is "orientexas" and is located in Tampa, Florida. This item can be shipped to United States.