Good detail. Whizzed.
Germany, Kingdom of Prussia, Friedrich Wilhelm III (1797-1840), 2 Thaler 1839, Berlin Mint.
Obverse: bust of the ruler facing right, letter A below
FRIEDR WILHELM III KOENIG V PREUSSEN
Reverse: a multi-field coat of arms shield under the crown
2 THALER VII EINE-F.MARK 3 1/2 GULDEN, VEREINS 1839 MÜNZE
Diameter 41 mm, weight 37.03 g