$2.60 Blue, Graf Zeppelin (C15). Mathematically perfect centering with wide margins, deep rich color, slogan machine cancel

EXTREMELY FINE GEM. A PERFECT USED EXAMPLE OF THE $2.60 GRAF ZEPPELIN, GRADED GEM 100 BY P.S.E. -- THE HIGHEST GRADE AWARDED.

With 2023 P.S.E. certificate (Gem 100; SMQ $6,000.00). Only two used C15's have achieved this perfect graded, which is the highest awarded. We have not offered the other.

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