Reciently found a 1914D penny -- which at fine books at $250.00 in the red book. I have a car wax call liquid luster -- but it works great as a jewlery cleaner -- it polishes up silver like you can't believe -- anyhow I decided to try it on a 1917S wheat penny. Do you think I should use it to clean the 1914D penny? I does not look like it took off that much detal (although in retrospect it would have been better to take a before and after pic ).