This lot of 6 first day covers features air mail stamps from the United States dating from 1959 to 1961. Each cover has been cancelled with a first day of issue cancellation type, making them a great addition to any postal history collection. The covers are in excellent condition and showcase a variety of denominations, including assorted values. They were all produced in the United States and represent an important aspect of air mail history. Add these unique covers to your stamp collection today!