1823 George IV 1/2 Crown

G'day, I'm quoting Tony CLAYTON here:
"... Halfcrowns of George IV come with two obverses and four reverses, as follows:
Obverse 1: Laureate Head, GEORGIUS IIII D G BRITANNIAR REX F D (1820-4)
Obverse 2: Bare Head, GEORGIUS IV DEI GRATIA, {date} below (1824-9, 1824 version very scarce)
Reverse 1a: Garnished Shield, large crown above, ANNO {date} below (1820-1)
Reverse 1b: As above but with small differences in many places (1821-3)
Reverse 2: Crowned shield with garter on which is HONI SOIT QUI MAL Y PENSE, ANNO {date} below (1823-4).
Reverse 3: Garnished shield surmounted by helmet and crown, BRITANNIARUM REX FID DEF around (1824-9, 1824 version very scarce)."

Peter in Oz