I don't know if this will help any as it sounds like your painting may be older if it was brought home by a WWII soldier. However I have a painting also signed Vitti. On the back is an informational note on the artist and it says:
Vitti was born in Taranto, Italy in 1945. Although his education led him to be a teacher, he loved art and did it as a side line. In 1964 he took part in the exhibition in Taranto and received so much praise that he decided to devote more time to art. Eventually he left his teaching profession and is now living completely on what he derives from his paintings. His paintings have been very well accepted by art critics and have been praised for their delicacy and harmony of color."
The artist signature on the front appears to say "Vitti T.(?) Giovanni"??? It has a "W. T. Burger Co., Inc." Sticker on the back with a registry number and title of "Girl w/Fan". I've done some research and found I can get an appraisal for my picture by contacting the Burger Co. at
W.T. Burger Co.
P. O. Drawer B
La Porte, IN 46352
Not sure if any of this will help any of you but if it does great!