The item is a decorative plate depicting "Métiers du Vieux Paris" (Trades of Old Paris), specifically "Marchande de poires cuites" (Cooked pear seller). 
 
Marked on back, “echt cobalt Bavaria Schumann Arzberg Germany 66
Amseries illustrating various old Parisian trades.
Plates in this series often have a cobalt blue band with gold trim.
The diameter of the plate is approximately 7.5 inches
Excellent vintage condition, no chips or cracks