1988 45¢ Air Post - Samuel Langley Mint Sheet

United States #C119 36¢ Air Post - Igor Sikorsky Mint Sheet of 50 Mint condition, never hinged.

U.S. Scott #C117 44¢ Air Post - New Sweden Mint Sheet of 50

United States #C120 45¢ Air Post - French Revolution Mint Sheet of 30 Mint condition, never hinged.

United States #C127 45¢ Air Post - Americas Issue (Island Beach) Mint Sheet of 50 Mint condition, never hinged.

U.S. Scott #C42 10¢ Air Post - Post Office Mint Sheet of 50