Rhodesia 1910 10d Gabon Receiving Authority Specimen

GABON RECEIVING AUTHORITY SPECIMENS: 1910 Double Head 10d scarlet & reddish mauve (SG 149). Unused example overprinted SPECIMEN vertically in the usual manner of the UPU distribution. Also with partial strikes across each bottom corner of receiving authority handstamp "Colonie de Gabon et du Congo Francais/ Direction de L'interieur." Some imperfections. A rare Double Head from the Gabon UPU archive.