The Frank Viles Collection of Sixpences | George IV (1820-1830), 'Lion' Sixpences (4), 1826 (2); 1828; 1829 (Spink 3815; ESC 2433 [1626]; 2438 [1665]; 3439 [1666]), all but last cleaned, generally very fine or better, the last attractively toned, good very fine, the 1828 very rare (4)