Mauritius 1891 QV 50c on 8c Envelope


1891 QV 50c surcharged on 8c milky blue (oxidation of the milky blue to the distinct grayish-brown shade) stationery envelope (H&G B15). With rose-coloured GPO cachet and handwritten control. Unused, some light soiling. Elusive stationery item - listed "RRR" by H&G with apparently only 500 issued.
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