This postcard image includes 13 women, as depicted by famous artists. As the card is tilted, each woman moves. See the effect on second image.
This image is also a parody of a famous photo of construction workers taking a lunch break on a steel girder high above New York City, from back in 1932. Here is some history, not printed on this postcard.
Lunch atop a Skyscraper is a black-and-white photograph
taken on September 20, 1932, of eleven ironworkers sitting on a steel beam 850
feet (260 meters) above the ground on the sixty-ninth floor of the RCA Building
in Manhattan, New York City. It was arranged as a publicity stunt, part of a
campaign promoting the skyscraper.