HANOVER. George IV. 1820-1830. AV Half Sovereign (19.5mm, 3.99 g, 7h). Type I. London mint. Dated 1821. Laureate head left / Crowned and ornately garnished coat-of-arms. Marsh, Half 403; MCE 482; SCBC 3802. In NGC encapsulation graded MS 63. Rare. Lot includes old Seaby ticket.