Accadia (with cc, rather than c) seems to be an Italian geographical name, while Bonaventura is more like a personal name, that occurs as a family name as well as a first name in several countries. Can't think of a more credible solution than Italy, but the denomination is odd. L. 3 could conceivably be liters.
The flan was made by pouring hot metal on a heat-resistance surface, like stone and flattening it. That is not a way to mass produce and it will give various sizes, thicknesses or both, so I can't believe it's a game token. The lettering looks like it was produced with a single die, which is odd, because a cast flan risks crumbling under the force of the die. Maybe the object that flattened the hot metal pressed the letters in the metal?
The token seems to be a country hick production and the Italian town of Accadia is not really a metropolis, so the token could well have been used in agriculture . An obvious candidate would be olive oil production. In fact, an olive oil press could have been used to make such a token. An olive wood0-fired stove could melt metal.
Peter