Obverse: the obverse of the coin depicts Charles Felix - Duke of Savoy, Piedmont, Aosta and King of Sardinia. Around it, his initials "CAR. FELIX DG REX SAR. CP. ET HIER" are carved in a semicircle.
Reverse: The reverse of the coin depicts a crowned spade-shaped shield, with the Savoy eagle shield in the centre. The shield is surrounded by 2 oak branches. At the bottom, the denomination of the coin is "L.20". The coin is surrounded by the inscription "DVX SAB. GENVAE ET MONTISF. PRINC. PED. &."