throat flaw, showing Types 9 (top two rows) and 10 (third row), unused with large part original gum; two with gum crease and one with slight thin. Fine appearance. S.G. 17/18, £1020+. Photo" /> unused Block Larger Than four Setting 10, "½" on 1d. dull red, an upper left corner block of fifteen (5x3), one with <I>throat flaw</I>, showing Types 9 (top two rows) and 10 (third row), unused with large part original gum; two with gum crease and one with slight thin. Fine appearance. S.G. 17/18, £1020+. Photo | Christie's