Here is an antique HBCM Montereau plate that measures 7 3/4" in diameter.  It is called "Les Automobiles De L'Avenir", or "Cars of the Future".  It is as shown, with fanciful depictions of cars as imagined in the 1800's. Plate also says in French, "Forms of motor vehicles with gas, steam or electric engines".  Pattern is clear, condition is excellent.  This is a rare plate.