1c Green & Black on Violet Paper, Proprietary, Center Inverted (RB1ad). Deep rich colors, detailed impressions, neat handstamp cancel

VERY FINE AND CHOICE. A RARE SOUND EXAMPLE OF THE ONE-CENT PROPRIETARY INVERT ON VIOLET PAPER. ONLY 25 EXAMPLES ARE RECORDED, MOST OF WHICH ARE FAULTY.

In his privately published census, Larry Lyons records 23 examples of this invert error, most of which have thins or creases, or are off center. We offered one additional copy in our 2006 Tolman sale, and the example offered here brings the total to 25. Of these, at least sixteen have faults.

With 2009 P.F. certificate.

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