Here is Guernica painting by Pablo Picasso ready for full color 3D printing. Topology is just a standard Dynamesh. The model was created in ZBrush and Mudbox. As you can see the painting is slightly extruded in 3D, so I am attaching stl if you would want to 3D print this with standard materials.

Dimensions with the frame : height - 16.46 cm, width - 80 cm, depth - 0.6 cm

If you have any questions please don't hesitate to contact me. I will respond you ASAP. I encourage you to check my other famous paintings 3D models.