Here's mine. I tried to make it appear that it had been played a helluva lot, not simply sanded a helluva lot. Not sure I succeeded, but hey ho.
Rubbed down a bit on certain contours, a bunch of keys repeatedly dropped on the body, the chrome very laboriously rubbed with 2000 grit wet and dry until it had rubbed through in places, coffee rubbed into the white paint on the controls, the screws rubbed with 2000 grit and doused with salty water, scratchp,ate strategically scratched as it with a pick while playing and brown boot polish rubbed in.