I soaked a couple of my 1943 steel pennies in lemon juice slightly diluted and put them in an old prescription bottle, then i used a small magnet to raise them off the bottom. Within 6 hrs. the coins came out like brand new. One was a denver mint and i noticed the d is doubled. not bad , huh? I highly recommend this method. Besides, I felt their not worth much, what do I have to lose. Give it a try an give me some feedback. Thanks