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VERY FINE. A HANDSOME EXAMPLE OF THE RARE 4-CENT COLUMBIAN ERROR OF COLOR IN THE DEEPER OF TWO SHADES.
The 4c Columbian color error was caused by the use of a wrong batch of ink, and spectrographic analysis has shown that the blue inks of the 4c error and 1c Columbian have the same components.
Stamps from at least two panes reached collectors, and the few cancelled examples indicate that stamps used by the public came from additional panes. It is likely that a number of full sheets were printed using the wrong ink, and most of the stamps have simply been lost to philately.
Signed Colson ("WHC" handstamp) and with 2009 P.S.E. certificate. (Image)
EXTREMELY FINE GEM. A SUPERB MINT NEVER-HINGED EXAMPLE OF THE 5-CENT COLUMBIAN, WHICH HAS BEEN GRADED SUPERB 98 BY P.S.E.
With 2009 P.S.E. certificate (Superb 98, SMQ $4,000.00). Only six have graded higher to date. (Image)
EXTREMELY FINE GEM. A PHENOMENAL MINT NEVER-HINGED EXAMPLE OF THE 5-CENT COLUMBIAN ISSUE.
With 2008 P.S.E. certificate (XF-Superb 95 Jumbo, SMQ $1,100.00 as 95, $4,000.00 as 98). (Image)