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EXTREMELY FINE GEM. A MAGNIFICENT MINT NEVER-HINGED EXAMPLE OF THE 1923 24-CENT AIR POST, WHICH HAS BEEN GRADED GEM 100 BY P.S.E. -- THIS IS THE HIGHEST GRADE AWARDED.
With 2012 P.S.E. certificate (Gem 100; SMQ $3,250.00). This is the highest grade awarded and it is shared by only seven others (Image)