I have a thousand or more of these.
1. Is there a solvent I can use to remove the brownish coating to see if the gold extends unerneath?
2. These are less than three years old. Despite the surprisingly "chunky" look of some of them I know the PM is flashed on. Still, any (gu)estimate as to yield per pound?
3. I'd appreciate recommendations on the best processing method for these.
1. Is there a solvent I can use to remove the brownish coating to see if the gold extends unerneath?
2. These are less than three years old. Despite the surprisingly "chunky" look of some of them I know the PM is flashed on. Still, any (gu)estimate as to yield per pound?
3. I'd appreciate recommendations on the best processing method for these.