#1660 Texas State Flag first day cover by an unknown cachetmaker. Postmark State: PA City: Philadel..
$2.00
#1661 Iowa State Flag first day cover by an unknown cachetmaker. Postmark State: DC City: Washingto..
$2.00
#1661 Iowa State Flag first day cover by an unknown cachetmaker. Postmark State: PA City: Philadelp..
$2.00
#1662 Wisconsin State Flag first day cover by an unknown cachetmaker. Postmark State: DC City: Wash..
$2.00
#1662 Wisconsin State Flag first day cover by an unknown cachetmaker. Postmark State: PA City: Phil..
$2.00
#1663 California State Flag first day cover by an unknown cachetmaker. Postmark State: PA City: Phi..
$2.00
#1663 California State Flag first day cover by an unknown cachetmaker. Postmark State: DC City: Was..
$2.00
#1664 Minnesota State Flag first day cover by an unknown cachetmaker. Postmark State: DC City: Wash..
$2.00
#1664 Minnesota State Flag first day cover by an unknown cachetmaker. Postmark State: PA City: Phil..
$2.00
#1665 Oregon State Flag first day cover by an unknown cachetmaker. Postmark State: DC City: Washing..
$2.00
#1665 Oregon State Flag first day cover by an unknown cachetmaker. Postmark State: PA City: Philade..
$2.00
#1666 Kansas State Flag first day cover by an unknown cachetmaker. Postmark State: DC City: Washing..
$2.00
#1666 Kansas State Flag first day cover by an unknown cachetmaker. Postmark State: PA City: Philade..
$2.00
#1667 West Virginia State Flag first day cover by an unknown cachetmaker. Postmark State: DC City: ..
$2.00
#1667 West Virginia State Flag first day cover by an unknown cachetmaker. Postmark State: PA City: ..
$2.00
#1668 Nevada State Flag first day cover by an unknown cachetmaker. Postmark State: PA City: Philade..
$2.00
#1668 Nevada State Flag first day cover by an unknown cachetmaker. Postmark State: DC City: Washing..
$2.00
#1670 Colorado State Flag first day cover by an unknown cachetmaker. Postmark State: PA City: Phila..
$2.00
#1670 Colorado State Flag first day cover by an unknown cachetmaker. Postmark State: DC City: Washi..
$2.00
#1671 North Dakota State Flag first day cover by an unknown cachetmaker. Postmark State: DC City: W..
$2.00
#1671 North Dakota State Flag first day cover by an unknown cachetmaker. Postmark State: PA City: P..
$2.00
#1672 South Dakota State Flag first day cover by an unknown cachetmaker. Postmark State: DC City: W..
$2.00
#1672 South Dakota State Flag first day cover by an unknown cachetmaker. Postmark State: PA City: P..
$2.00
#1673 Montana State Flag first day cover by an unknown cachetmaker. Postmark State: DC City: Washin..
$2.00
#1673 Montana State Flag first day cover by an unknown cachetmaker. Postmark State: PA City: Philad..
$2.00
#1674 Washington State Flag first day cover by an unknown cachetmaker. Postmark State: PA City: Phi..
$2.00
#1674 Washington State Flag first day cover by an unknown cachetmaker. Postmark State: DC City: Was..
$2.00
#1675 Idaho State Flag first day cover by an unknown cachetmaker. Postmark State: PA City: Philadel..
$2.00
#1675 Idaho State Flag first day cover by an unknown cachetmaker. Postmark State: DC City: Washingt..
$2.00
#1677 Utah State Flag first day cover by an unknown cachetmaker. Postmark State: DC City: Washingto..
$2.00
#1677 Utah State Flag first day cover by an unknown cachetmaker. Postmark State: PA City: Philadelp..
$2.00
#1678 Oklahoma State Flag first day cover by an unknown cachetmaker. Postmark State: DC City: Washi..
$2.00
#1678 Oklahoma State Flag first day cover by an unknown cachetmaker. Postmark State: PA City: Phila..
$2.00
#1679 New Mexico State Flag first day cover by an unknown cachetmaker. Postmark State: DC City: Was..
$2.00
#1679 New Mexico State Flag first day cover by an unknown cachetmaker. Postmark State: PA City: Phi..
$2.00
#1680 Arizona State Flag first day cover by an unknown cachetmaker. Postmark State: DC City: Washin..
$2.00
#1680 Arizona State Flag first day cover by an unknown cachetmaker. Postmark State: PA City: Philad..
$2.00
#1681 Alaska State Flag first day cover by an unknown cachetmaker. Postmark State: DC City: Washing..
$2.00
#1682 Hawaii State Flag first day cover by an unknown cachetmaker. Postmark State: DC City: Washing..
$2.00
#1682 Hawaii State Flag first day cover by an unknown cachetmaker. Postmark State: PA City: Philade..
$2.00
#1723-24 Energy Conservation and Development first day cover by an unknown cachetmaker. The flap of..
$2.50
#1759 Viking Missions to Mars first day cover by an unknown cachetmaker. Postmark State: VA City: H..
$2.50
#1801 Will Rogers first day cover by an unknown cachetmaker. The upper center is creased. Postmark..
$6.00
#1953 Alabama Birds and Flowers first day cover by an unknown cachetmaker. The upper and right edges..
$1.00
#1954 Alaska Birds and Flowers first day cover by an unknown cachetmaker. The upper and right edges ..
$2.00
#1955 Arizona Birds and Flowers first day cover by an unknown cachetmaker. The upper and right edges..
$2.00
#1956 Arkansas Birds and Flowers first day cover by an unknown cachetmaker. The upper and right edge..
$2.00
#1957 California Birds and Flowers first day cover by an unknown cachetmaker. The upper and right ed..
$2.00
#1958 Colorado Birds and Flowers first day cover by an unknown cachetmaker. The upper and right edge..
$2.00
#1960 Delaware Birds and Flowers first day cover by an unknown cachetmaker. The upper and right edge..
$2.00