10c Columbian (237). Mathematically perfect centering with massive Jumbo margins, rich color and clear impression, long and full perforations, light strike of duplex cancel leaves design clearly visible, Extremely Fine Gem, this stunning used stamp has been awarded the ultimate grade of Gem 100 Jumbo, which is the highest grade possible on the grading chart, ex Kirke, with 2009 P.S.E. certificate (Gem 100 Jumbo; unpriced in SMQ above the grade of 98, SMQ $1,600.00 as 98), this is one of only two used Columbians to be awarded the highest possible grade of Gem 100 Jumbo, the other is a 6c, the next highest graded used 10c is a single example at 98J.

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