49er12
Bronze Member
- Aug 22, 2013
- 1,238
- 1,627
- Detector(s) used
- Minelab xterra, Whites DFX, Notka Makro Simplex. Folks the price don’t mean everything, the question is are you willing to put in the time to learn the machine, experience will pay off I guarantee it.
- Primary Interest:
- All Treasure Hunting
It isn't difficult to clean dull pennies. All you have to do is immerse them in a solution if water, vinegar and salt. The acetic acid in vinegar that dissolves copper oxide, and adding salt speeds up the process. Corroded pennies usually turn bright again in less than a minute. You can get similar results using lemon juice, which contains citric acid. If you remove a penny from this solution and leave it on a table without drying it off, it will form a green coating. This is malachite, a salt of copper.
