11mm(width)×15mm(length) The Automobile Club de Monaco (ACM) is the headquarters of motorsport in the Principality of Monaco and one of the most prestigious automobile clubs in the world.
More than just a gathering of car enthusiasts, ACM is known as a powerful organization that hosts and operates the world's most prestigious races, including the Formula 1 Monaco Grand Prix.
Furthermore, membership is subject to extremely rigorous screening, and it is no exaggeration to say that the level of membership is among the highest in the world.
Founded in 1890 as the "Sport Vélocipédique de Monaco" (Monegasque Cycling Federation).
This is a membership badge produced in 1990 to commemorate the club's 100th anniversary.