Airmail cover with printed 'Compania Real Hollandesa de Vapores, Casilla 1600, Valparaiso, Chile' company return address on flap and 'Royal Netherlands Steamship Company' handstamp below franked with single 1952 10p carmine 'Isabella the Catholic' issue (SG 409) with 'D F C' PERFIN of Duncan Fox & Co. a forwarding agent for shipping companies. Sent registered to UK and re-registered on arrival with added blue on white 'BRISTOL 59' registration label.