15 mixed USPS Forever stamps that will always be valid to mail a domestic first class letter. Variety pack of stamps. Guaranteed to have no duplicates. Includes one 2-ounce non-machinable surcharge stamp and one 3-ounce stamp for mailing larger envelopes and/or square shaped envelopes. All unique Forever stamps with no US Flag stamps. Pictures are representative and may not contain the exact mix of stamps pictured.