Early 20th Century (Scott 294-330) 
1930 65c Graf Zeppelin Scott C13(0)
ULTIMATE GRADE OF GEM-100 MAGNIFICENT WORLD CLASS GEM IN THE ULTIMATE GRADE OF GEM-100, Perfectly centered amid extremely large margins, Glowing rich color and sharp clear impression, A perfect World Class example for the collector building the FINEST set of Zeppelins one GEM-100 at a time, A surprisingly difficult stamp to obtain in the ultimate [...]
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1918 24c Carmine Rose and Blue “Inverted Jenny” Scott C3a
THE FINEST NEVER-HINGED EXAMPLE Few stamps hold the widespread fascination of the “Inverted Jenny” and the importance of its undisputed popularity combined with the unimprovable virgin condition cannot be overstated. The Finer of the two graded Never Hinged example known. The ultimate “virgin” inverted Jenny. The 1918 Twenty Four Cent Inverted Jenny is one of [...]
1c Pan-American, Center Inverted – Scott 294a
ONE OF THE FINEST LIGHTLY-HINGED EXAMPLES Unusually choice centering and wide margins for this Invert error, barest trace of hinging, deep rich colors on bright paper, remarkable state of freshness EXTREMELY FINE GEM. NO DOUBT ONE OF THE FINEST LIGHTLY-HINGED EXAMPLES OF THE ONE-CENT PAN-AMERICAN INVERT. The 1c Pan-American Inverts were found in at least [...]