1) Baked AO.
2) Used 4 different wood textures as overlays from CGTextures to create the wood for the diffuse. I used 2 metal textures to get the metal. I hand painted the key hole and hinge shadows.
3) Created spec map from diffuse. Added slight color.
4) Created normal map from diffuse using CrazyBump.
5) Did a lot of back and forth fine tuning from Photoshop to Maya to get the color tones I was aiming for. I used a blinn shader since metal was involved, which gave me way more control of the specularity.
This was a fun model to texture.