A few months ago I visited Fenway Park in Boston, MA and saw they had a pressed coin machine (enter 2 quarters and a penny, turn the crank, etc.). I was wondering if any of you had any recommendations for using one of these machines. Do you recommend cleaning pennies before hand so they have a certain luster? If so, what type of solution would you recommend? Any other hints or tricks?
Only real recomendation I can make on this is use pre-82 pennies as the zinc ones come out ugly (imho anyway)
