Russia. Alexander I. Poltina (1/2 Rouble) AR 1818 СПБ-ПС.
Obv. Two-headed eagle with a crown above. Value, date.
Rev. ЧИСТАГО СЕРЕБРА 2 ЗОЛОТН. 10½ ДОЛЕЙ / С. П. Б. - Text within wreath, crown above.
Catalogue references: Bitkin.160 - Conros.116/12
9,91 g - 28,5 mm - Fine / TB