The best way to artificially tone a coin is not to try. While natural toning is valued by many collectors, anything intentionally done using heat, chemicals, etc. will reduce a coin's value.
One way you can tone a silver coin (which is a slow working method) is to put it into a manila envelope and place it on your windowsill. I've heard it can take a few months until it finally tones, but it works.
You mean ARTIFICIALLY INSEMINATED ? (A correct question is the best way to get a correct answer)
10 pound is the thing
Tone
The best way to do that is to take it to a coin collector.
The best way is to rub ketchup!
magic coin tricks are a sleight of hand, best way to learn is as an apprentice.
The best way is to do a Google search.
steroids!! lots of steroids!!
put it through your computer
Reflective and Descriptive (APEX) !/
The best way to display military coins is to purchase a military challenge coin display cases. One can buy such a case on the SF Display website. They have a very large selection of coin display cases.