2c Pan-American (295). Deep rich colors, unusually wide and balanced margins for this difficult issue, wavy-line machine cancel, Extremely Fine Gem, with 2011 P.S.E. certificate (Superb 98; SMQ $660.00), only two have graded higher to date and only one other shares this grade, used Pan-Americans are extremely difficult to obtain in the higher grades -- there are only five used stamps of any denomination graded 98 or above

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