1928-1pcp2, WX44, 1928 U.S. National Christmas Seals, Progressive Color Proofs (PCPs), seven (7) Stages

1928 U.S. Christmas Seals

1928-1pcp2, WX44, 1928 U.S. National Christmas Seals, Progressive Color Proofs (PCPs), seven (7) Stages

1928 U.S. Christmas Seals