Originally Posted by
Digger_O'Dell
By comparison, you can see where you sanded off much of the detail and raised areas of the token, so definitely devalued if it had any value to begin with. If you wand to get rid of oxidation on brass such as this token and want to keep all the detail there are chemical brass cleaners that will remove the oxidation with little or no rubbing. But mind, that also will likely devalue the token in most cases because I think almost any serious collector will be looking for that patina showing it's age.
Hope this helps