Orange River Colony 1900 Ovpts on Cape, Tunisian Specimen Set

1900-02 Cape Overprinted: ½d green, 1d carmine & 2½d ultramarine (SG 133-135), each handstamped "SPECIMEN" type TUN1 in violet (by the Tunisian Post Office as the Receiving Authority applying the handstamp to their distribution from the UPU). VF/M, rare, a unique trio from the Tunisian UPU specimen collection.