The lettering in the edge of this coins has two version.
They appear both straight and upside down for every issuing year (1971 through 1974).
I would propose that this was added to the year list of this coin.
Le lettrage dans le bord de ceci monnaie a deux version. Normal et à l'envers dans chaque année de publication (1971 à 1974).
Je propose que Il est ajouté au la liste des années.
Sorry for the bad french.