I aquired a lucky strike cigarete metal tin (garage sale). It has a little rust on the exterior. The interior has more. What method of removal would give the best results. Electrolysis or lemon juice? I would not like to damage or dull the color that is existing. The inside has some text that i was hoping to reveal. If anyone knows or can lead me in the right direction i would appreciate it. I put three picture up. First the front ,then the inside,then the back.