Didone porcelain Italy Le Tre Sorelle espresso demitasse coffee cup and saucer

This is a porcelain espresso or demitasse coffee cup with a saucer signed Didone Design Italiano, porcellana, Decorato in Italia. The saucer says Le Tre Sorelle (The Three Sisters) and cup features photography of three women on both sides. These pieces are likely imported into Italy as blanks and decorated there. Black and gray on white. The cup holds 6 ounces and stands 3 1/8 inches tall. Her rim diameter is 2 3/4 inches and base diameter is 1 3/4 inches. The saucer is 5 3/4 inches in diameter, with intentionally off center indentation for the cup. Very good pre-owned condition. The only flaw I see is a tiny dark spot on the handle. See photo.