Sao Thome e Principe 1911, Printed matter stationery postcard from Denmark to "St.Thomé, West Africa" showing boxed INCONNU/DESCONHECIDO and RETOUR A L´ENVOYEUR/DE VOLVIDO AO REMETTENTE. On the backside advertisement for "Finest Danish Butter". For Denmark Sao Tomé is a very scarce destination! Condition: Cover (Image)