February 20, 2007 is also Mardi Gras.
This linen postcard probably is more than fifty years old. I consider this a "stunner" with "human interest"—terms used in the book Linen Postcards which I reviewed on my Postcardy.com website.
This postcard doesn't give any additional information on the back, so it is somewhat of a mystery. The title on the front seems a little confusing too. It implies that there is only one King and Queen. However, it probably should say "one of the many carnival balls," because each ball has its own King and Queen.