FIRST DAY
OF ISSUE
18/3
1883
HONORING
Montgomery Blair
Art Craft
मा
POSTMASTER GENERAL
UNDER LINCOLN
ORIGINATOR OF
WHAT IS NOW THE
UNIVERSAL POSTAL UNION
SPRING
1715
1963
MD.
1st INTERNATIONAL POSTAL CONFERENCE
100 ANNIVERSARY
MONTGOMERY BLAIR U.S. AIR MAIL 15c
FIRST DAY OF ISSUE
