1901, 4¢ Pan-American, top margin plate number "1145" single, o.g., never hinged, excellent color and centering, Extremely Fine and choice, a lovely gem; with 2000 P.S.E. certificate. Scott No. 296  $170. $0 (Image)

1901, 4¢ Pan-American, top margin plate "1145" block of 6 with imprint and siderographer's initials, o.g., never hinged, rich vibrant colors on bright fresh paper, beautifully centered throughout, Very Fine to Extremely Fine, ex Drucker. Scott No. 296  $3,500. A WONDERFULLY CHOICE NEVER HINGED PLATE BLOCK OF THE 4¢ PAN-AMERICAN ISSUE. $0 (Image)

1901, 4¢ Pan-American, center inverted, full o.g., well centered amid wide margins, strong vivid colors, reperforated at top, Very Fine to Extremely Fine appearance; with 1999 P.F. certificate. Scott No. 296a  $75,000. AN ATTRACTIVE EXAMPLE OF THE 4¢ PAN-AMERICAN WITH CENTER INVERTED. A GREAT 20TH CENTURY RARITY. The 4¢ invert was printed deliberately as the result of a misunderstanding. After the discovery of the 1¢ and 2¢ inverts in mid-1901, the Third Assistant Postmaster, Edwin C. Madden, decided to track down any additional errors. He had his assistant instruct the Bureau of Engraving and Printing to send any inverted Pan-American stamps to Madden's office. No inverted stamps in fact remained on hand, and interpreting Madden's communique as an unconditional demand for inverts, the Bureau produced four sheets of them from the 4 cent plates and sent 400 copies on to Madden. About about half were marked "Specimen" and between 1901 and 1904 Madden distributed 172 examples. $0 (Image)