Watch List notes:

The Hardcastle Collection | George III (1760-1820), Sixpences, New Coinage (2), 1816; another, 1819, letters re-entered in GEOR (ESC 2191 [1630], 2201 [1636]; S.3791), die flaws above the head on the 1816 issue, otherwise both choice, as struck (2).

Estimate: £50 - £80