10c Brown, With Secret Mark (188). Original gum, h.r., incredibly well-centered with fabulous wide margins, deep rich color and clear impression

EXTREMELY FINE. AN EXCEPTIONALLY BEAUTIFUL 1879 10-CENT AMERICAN BANK NOTE COMPANY ISSUE WITH SECRET MARK. VERY DIFFICULT TO FIND IN THIS QUALITY, ESPECIALLY WITH ORIGINAL GUM.

With 2007 P.S.E. certificate (XF 90 Jumbo; SMQ $5,200.00 as 90, $8,500.00 as 95). This is the highest grade awarded to date, and the only example to achieve this grade (the next-highest grade is a VF 80)

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