6c Proprietary, Perforated (R31c). Neat strike of blue Charles Osgood May 30, 1871 oval oval cancel, typical small faults nearly always encountered with this issue, otherwise Fine, a particularly attractive and collectable example, Scott Catalogue notes "Nearly all examples of No. R31 are faulty and poorly centered. The catalogue value is for a fine centered stamp with minor faults which do not detract from its appearance."

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