These three portraits by Peter Paul Rubens are recolours of justmoi's "Majestic Splendor" Painting. The mesh can be found here:
http://www.modthesims2.com/download.php?t=159335.
You will need the Base Game plus at least one other Expansion Pack (it doesn't matter which one) for these paintings to appear in your game.
Credits:justmoi for the "Majestic" series of meshes and the SimPE Photo Studio templates;
Quaxi and the team for SimPE;
Images from Art Renewal Center and Web Gallery of Art.