Ave!
Super-soft Dremel Buffer Tool
Sometimes, even our softest boar's-hair bristle brush can be just a bit too harsh for certain coin's fragile patina; think silvered coins.
This tool is a pure buffer; no bristles. It will buff both waxed and non-waxed to an excellent shine.
Zero harm to any coin's patina. Use dry...but, when it arrives get it wet, let it half-dry, then use it on anything. A few of the fibers will blow off, but after that Bob's your uncle.
One of these buffers will last you years.