Help! I Think I Messed My New Coin Collection While Trying To Clean It.

To start with try a bit of Acetone in a clean glass dish. Only put in one coin at a time. Let soak for a few minutes and remove. Place on a cotton towel to dry. More than likely most will not improve. Next try Jewerly cleaner from places like Walmart of Target. You don't have much to loose now so further cleaning will not hurt much more. IF you get that pinkish color off, place coins on a wooden block on a window sill for a few months. Again, not much to loose.