First, clean the coin thoroughly with tooth paste. This will remove any caked on grime and gunk, and allow the dog slobber to reach the surface below in the next step. The next step is the most important. It is THIS STEP that provides the layer of protection to the coin that renders the following steps safe and effective. Liberally prep the coin with dog slobber. Not just any dog will do, however! Only the slobber of a German Shepherd contains the correct proteins, amino acids, and bacteria to combine with the metal of the coin to form the protective layer we need. Don't worry if you don't see this layer developing. It's INVISIBLE! (As it must be, of course, to remain undetectable by the top grading companies)Next, you'll need Deep Space Polish. I'm not really sure what part of space it comes from, but I had it laying around, and it does a nice job. It can't be very expensive, otherwise I wouldn't have it. Polish the coin to your heart's content. Don't worry about damaging the surface, the dog slobber will protect the coin!Here is the finished result. I've done some very slight post-processing of the image, but nothing major that alters the look of the coin in hand. Feel free to PM me with any questions about the process. I'll be sending the coin to PCGS with my next submission of circulated 1990-2000 Lincoln Cents. I'll let you know the final grade!