TRISTAN DA CUNHA 1978 RFA RELIANT IMPERF PROOF BLOCK, COWELLS
RFA Reliant imperforate proof block x 4 lacking inscriptions and with shade differences compared to issued stamps. Ex Cowells security printers. Scarce. The odd wrinkle otherwise fine. SG253var; SC250var
Note: printing of the issued stamps was undertaken by Cartor in France
