American School - erotic portrait

This is a very rare miniature on ivory and is the only one of this type ever seen by this collector. Judging by the frame and the hairstyles it is American and dates to around World War I or perhaps 1920.
In its day it would have been incredibly risque and even in the 21C, there was some hesitation as to whether to include it in this Internet Exhibition. However, due to its rarity, it seemed appropriate to include it. 1202