Jig Saw 3D model is available on CGTrader for $12. Original author: ecati. Specs: 4345 polys, 9234 verts.
SKP (Sketchup, filesize: 526 KB), OBJ (OBJ, filesize: 350 KB), FBX (Autodesk FBX, filesize: 523 KB), 3DS (3D Studio, filesize: 212 KB), DAE (Collada, filesize: 212 KB)