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EXTREMELY FINE GEM. THE PERFECT 5-CENT PERF 12 SINGLE-LINE WATERMARK SCOTT 378. THIS ASTONISHING STAMP HAS RECEIVED THE ULTIMATE GRADE OF GEM 100 JUMBO FROM P.S.E.
With 2015 P.S.E. certificate (Gem 100 Jumbo; unpriced in SMQ in any grade above 98, SMQ $1,450.00 as 98). This is the highest grade possible and it is shared by no others. (Image)