This is an early 20th Century French fine porcelain cup and saucer. The maker is most likely Limoges and the decorator is Delvaux. Delvaux is a retail store in Paris that had their own decorating studio for the professional enamel decoration of porcelain and glass by their in-house artisan
The cup is decorated in a rich turquoise background enhanced with bright yellow banding and profusely enameled all over with florals. The set is in excellent condition with a minute amount of enamel and gilt wear. Marked as shown.
Size of Cup: 2" High
Size of Saucer: 6" Diameter.