3c Dark Violet, Ty. II, "Kiss Print" or "Double Impression"? (502 or 502d?). Showing subtle but clear doubling of the entire design as do all known used examples and most unused, light cancel leaves entire design clearly visible, Extremely Fine, only four used examples (including this one) have been certified as a double impression, our census of this issue, available at our website at http://www.siegelauctions.com/dynamic/census/502d/502d.pdf , contains four used and approximately a dozen unused copies, ex Saadi, Floyd and Natalee Grace, with 1990 and 2001 P.F. certificates as a double impression and 2012 P.F. certificate as a "kiss print" -- a poster child for the problems caused by shifting standards -- Scott Retail as double impression $1,000.00, offered on its own merits

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