Slingshot
This is the one painting I looked at longer than any other. Other paintings have tried to paint this very scene, and it seems that Goliath's head is just too small in proportion to David. As for this one, I think it is just right.
Here is the info about who did it.
Guido RENI - Bologne, 1575 - Bologne, 1642David vainqueur de Goliath Vers 1604 - 1606 H. : 2,37 m. ; L. : 1,37 m.