I know you should not clean a coin but if you can't see the details of the area your trying to look at. Soaking in hot tap water then a very soft brush. Would like everyone ones opinion
Due to the level of experience you have shown so far, it is best you don't do anything to your coins except to collect them, ask questions, and learn.
I would not brush a coin with anything unless it has no numismatic value in the first place.
I dig a lot of coins out of soil. Many have dirt, crud and residue attached to details that are critical to properly id the coin. I soak coins in olive oil for weeks to months. This action often loosens the substance so I can push it off details with a wet frayed wooden toothpick tip. I wonder if a jewelry sonic cleaner bath would also be safe. Peace Roy
Good day all. This is my first inquiry regarding coin condition of a 1897 -0 half dollar. Reverse shows sharp detail in shield and overall but obverse has 2 solder globs. Can the solder be removed without further damage. Liberty is all there and clear. Dug it in some old ground where circus tents were pitched. Peace Roy