4c Proprietary, Part Perforated (R22b). Block of four, unused (no gum), brilliant color, perf separations sensibly reinforced

VERY FINE. THIS IS THE ONLY RECORDED BLOCK OF THE PART PERFORATED 4-CENT PROPRIETARY ISSUE AND THE FINEST OF THE FEW KNOWN MULTIPLES.

The largest unit of the 4c Proprietary Part Perforated stamp is a repaired strip of six. This block of four is the only recorded block. In addition, there is a rejoined strip of four and a strip of three.

Ex Joyce and Curtis. With 2015 P.F. certificate

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