Seven authentic, rare octagonal, French bistro plates, circa 1910s-30s, having colour coded rims with numbers in francs that correspond to the price of various drinks, allowing the waiter to keep tabs by adding up totals based on the count of used plates. Overglaze retailer stamps of Léveillé & Mabit 33 Rue des Marais Paris. Date; 1910-30. Provenance; Paris, France. Condition; Fair with marking consummate with age and use.