Cleaning Mickey Mouse

[papa]

What would be the best way to clean up a Mickey Mouse wrist watch ?The back side is the worst,looks like corrosion? Green color mess.The leather band is stiff from age,do I leave it alone,or use mink oil on it?? Thanks.

 

[Ant]

If it's not working and the Crystal is scratch, tumbling it works wonders. Tumbling takes off paint, but it's not bad on powder coat.