unmounted mint Block Larger Than four 1950-53 chalky paper, 1c. (two shades) and 6c. complete sheets of sixty (6x10), each showing error St. Edward's Crown, one 1c. and the 6c. with it appearing on [48], the other 1c. with it appearing in the margin at upper right, fine unmounted mint. S.G. D4ac, D6ac