1988-S1x, 1987 U.S. Spring Charity Seals Sheet

1988 ALA U.S. Charity Seals

1988 U.S. Christmas Seals & U.S. Spring Charity Seals Sheet Collection

1988 ALA U.S. Charity Seals
1988 U.S. Christmas Seals
1988 U.S. Spring Charity Seals