1889 Post Office Seal - thick/extreme thick paper, chocolate
1889 Post Office Seal - thick/extreme thick paper, bister brown
1900 Post Office Seal - red brown
1879 Post Office Seal - thin paper, perf 12, red brown
1936 Post Office Seal - perf 12 x 8 1/2, black
1992 Post Office Seal - black
1907 Post Office Seal -typo., perf 12, blue
1912 Post Office Seal - blue, Rouletted 61/2
1916Post Office Seal - perf 12, black, pink
1917 Post Office Seal - perf 12, gray, black
1944 Post Office Seal - perf 12 1/2 x 8 1/2, grey black
1988 Post Office Seal -self-adhesive, 40 x 21mm, black
1917 American Red Cross Christmas Seal - perf 12
1888 Post Office Seal - med thick crisp paper, chocolate
1907 Post Office Seal - perf 12, bright royal blue
1907 Post Office Seal - watermark, seal of U.S., blue
1913 Post Office Seal - blue
1919 Post Office Seal - thin,white,crisp paper, perf 12, black
1946 Post Office Seal - perf 12,med to thick paper, gray black
1946 Post Office Seal - gray black
1947 Post Office Seal - perf 81/2, grey black
1948 Post Office Seal - thick paper perf 12 1/2, grey black
1950 Post Office Seal -imperf at sides, grey black