Antique RKG Czechoslovakia Child's Porcelain mug

Petite child's porcelain mug cup with gold accents by the RKG company. The mark on the bottom was used between 1921 and 1938, 'RKG' mark above 'CZECHOSLOVAKIA'. Measures approximately 3" tall, 2 3/4" wide, with small finger hole in the handle. No chips or cracks, but the gold is wearing off in spots. Great condition for age of the cup