Entre les deux son coeur balance from La Vie Parisienne (1913). The artist was Chéri Hérouard (1881-1961) – a French illustrator who was most famously known for his forty-five-year career for French society magazine, La Vie Parisienne.
I wish I could tell you what is going on here. Perhaps balancing “nice” and “naughty”? Maybe you have some thoughts?