unused Block of Four 1853 Government trial perforation 14, 1d. plate 74, JK-KL, a block of four from right of the sheet showing part inscription, unused with some original gum; some creasing and a few other minor faults but otherwise fine. An extremely rare item and the only known block showing marginal inscription. R.P.S. Certificate (1993). S.G. Spec. CE4, £15,000 as singles. Photo