George IV AR Sixpence, Silver, 2.81 grams. Dated 1821. 

Obverse: GEORGIUS IIII D:G:BRITANNIAR:REX F:D:, laureate
head left. 
Reverse: ANNO 1821, crowned shield of arms, thistle
to left, shamrock to right, rose below.

S. 3813; ESC 1654. 

Uncirculated, lustrous; light, irridescent tone.

Courtesy of TimeLine Originals (www.time-lines.co.uk), Okt, 2011