5c Blue, "Kiss Print" or "Double Impression"? (504 or 504b). Clear doubling of the entire design, deep rich color on bright paper, choice centering, New York oval registry cancel, natural pre-printing paper crease at right, Very Fine, very rare, only four used and six unused examples are known to us, the used originally formed a block of four, ex Floyd and Natalee Grace, with 2000 and 2001 P.S.E. certificates (former as a block) and 2001 P.F. certificate as a double impression, now with 2012 P.F. certificate as a "kiss print" -- if this is not a double impression, then it does not exist in used condition -- offered on its own merits, Scott Retail as the double impression $1,600.00

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