72 hours? Thats... A huge number of hours for such a small prop? Wires and texture flats would help, as this looks atm like a crazy bump filtered item and not a sculpted/sub-d mesh.
Your main problem right now is that the materials aren't matching up. The concept looks like some sort of damaged metal or something relatively smooth anyway, but your material is reading more as stone. There's too much noise in the normal map. Technically speaking, as has been mentioned already, you've got some pretty…