Proof 1c, 3c 1871 Proprietary, plate & trial color plate proofs on bond (RB1P5, RB1TC, RB3TC), two blocks of four and vertical pair of 1c Proprietary (Green & Black, Orange & Ultramarine and Scarlet & Black), block of four of 3c Proprietary (Blue & Black, gummed), also incl. no. R104TC5 single and block of four, very fine lot est.

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Proof 1c, 3c 1871 Proprietary, plate & trial color plate proofs on bond (RB1P5, RB1TC, RB3TC), two blocks of four and vertical pair of 1c Proprietary (Green & Black, Orange & Ultramarine and Scarlet & Black), block of four of 3c Proprietary (Blue & Black, gummed), also incl. no. R104TC5 single and block of four, very fine lot est.