4c Green & Black on Violet Paper, Proprietary, Center Inverted (RB4c). Rich colors and detailed impressions, light cancel leaves entire design clearly visible, diagonal crease ending in small tear at lower left, few other small faults

EXTREMELY FINE CENTERING. ONE OF ONLY SIX RECORDED EXAMPLES OF THE 4-CENT PROPRIETARY INVERT. THIS IS ONE OF THE FINEST IN EXISTENCE. ONE OF THE GREAT RARITIES OF ALL INVERTS AND REVENUE STAMPS.

In his privately published census, Larry Lyons records six examples of the 4c Proprietary invert on violet paper (none is known on green paper). All have flaws to varying degrees and four are defective. This example with beautiful centering and a light cancel is quite desirable.

Ex Cunliffe. With 1974 and 2009 P.F. certificates.

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