Limoges plate Avril (April), by artist Jean Dutheil and sponsored by the Musée Condé de Chantilly.
Second from the series Les très Riches Heures de Jean, Duc de Berry (aka The Very Rich Hours of Jean, Duc de Berry).

The plate is numbered AK 519 from the first and limited edition. It is marked first Edition, and has the Henri d'Arceault Limoges emblem amongst much other information on the underside of the plate .
In exergue Bradex No: 18-D-15-5.2.
Diameter: 24.5 cm (9" 5/8)