Made a simple cargo box. Can probably be used for Unity3D etc without any issues but haven't tried that. All the textures are from CGTextures.com and download to them are provided below.
Do note that for some reason the PNG-files do not work as intended so you have to save them as JPG's. I renamed the downloaded files on my computer so you'll get the purple render (4th images) if you haven't changed the reference for the images in the node editor.
Plywood image 1: http://cgtextures.com/texview.php?id=13542
Planks image 1: http://cgtextures.com/texview.php?id=12892
Decal 1 image 1: http://cgtextures.com/texview.php?id=53359
Decal 2 image 1: http://cgtextures.com/texview.php?id=52576
Details: Blender 2.67a (r56945) Cycles render
Verts: 248 Faces: 154 Tris: 316
muy util,gracias