Watch List notes:

George IV (1820-1830), Sixpence, 1821, reads BBITANNIAR, laureate head left, rev. crowned garnished shield, milled edge, 2.83g, 6h (Bull 2424; ESC 1656 [R3]; Spink 3813), heavier bagmarks to otherwise lustrous and quite brilliant fields, a bold extremely fine, the die-sinker's 'error' very rare.

Estimate: £200 - £260