HANOVER. Caroline of Brunswick. Queen of Great Britain, 1820-1821. Brass Medal (25mm, 4.09 g, 12h). The Trial of Queen Caroline. By T. Kettle. Struck 1820. H · M · G · M · QUEEN CAROLINE, bust left / GOD/ PROTECTS/ THE/ QUEEN within wreath. Eimer –; BHM 1029. EF.