Jozef Korolkiewicz was sometimes himself a model to body-studies for his future paintings.
This photograph helped him to paint a picture titled “The boxers”.  J.K. was awarded for this oil painting the 2-nd prize in the Pre-olympic (Los Angeles 1932) Art Contest in Warsaw.

Jozef Korolkiewicz’s body can be seen at the front of the present Warsaw’s Opera  House, where statues of Stanislaw Moniuszko and Wojciech Boguslawski are placed.
J.K. sat a model to the -“father of Polish opera and ballet art”- Boguslawski’s sculpture (and sang Moniuszko’s operas and songs).  J.K. also sat a model for some works of Wojciech Kossak.