These are old French tokens, or jetons, which were produced from about the mid 19th to the mid 20th century. Most of these A CONSOMMER tokens were minted in the 1910s and '20s, mainly between the two world wars.
Reverse legend: “30 c A CONSOMMER”
Edge: plain
Country: France
Year: 1918’s
Metal: Brass
Weight ± 2.26 g.
Diameter ± 18.4 mm
Authenticity unconditionally guaranteed!