Marble Bust of Flapper

Beautiful and unusual marble bust of 1920s female (flapper) on base. Two separate pieces. Some wear on piece with most notable on back of head; chips on base. Has not been cleaned.

I don't know when or where this was purchased. It was in my Grandmother's house and my family is from Italy.  I have not been able to find anything that even closely resembles it, so any comments regarding its history and approximate value would be much appreciated.