This is not the droid you are looking for. Unless you're looking for R2-D2. Then it is. I'm not completely happy with the lack of dirt on him, but I have included AO bakes as a basic dirt map, so painting on additional areas of filth should be pretty easy.

Bronze textures by [Jojo-ojoj](http://jojo-ojoj.deviantart.com/art/Bronze-seamless-textures-424959539). Galvanized metal texture from an image by [Donald Judd](https://www.flickr.com/photos/rocor/4746680479/).