c1912 INTERPROVINCIAL, PERFINS ON PROVING PARCEL LABEL: Pre-printed parcel label of Burroughs Welcome & Co used from Cape Town to the Medical Officer CONGO BELGE. Wonderfully franked Transvaal KEVII 1/-x10 & 6dx4 all tied by the despatch machine canceller. ALL STAMPS SHOWING/PROVING B W & Co PERFIN. Superb, scarce proving piece for interprovincials perfined thus.