A beautifully preserved piece.
Obverse: in the linear border the figure to the left, in the outer border the legend:
SALVAM-FAC-REMPVBLICAM-TVAM 1931;
Reverse: in the rim a wall with crowned three feathers, below it a cartouche with the denomination L.20, in the outer rim legend:
REPVBLICAM-DI-S-MARINO;