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.