cover 1875 (6 Aug.) "Nicholson" envelope addressed to Melbourne "Via Torres Straits" bearing 6c. mauve strip of three and 30c. mauve tied by fine "F1" in blue with "DEFFICIENT POSTAGE.../FINE..." and "1/6" in oval "MORE TO PAY", arrival notation at left and appropriate backstamps; 30c. with paper split, otherwise and fine and attractive cover. Photo