First, 
Big different between a proof and business strike.
If your dealing with with an average circulated 52D, not a lot of any value unless your dealing with a variety or error.
Never clean a coin...... unless you want it to be worth face value. There are a few solvents such as acetone and xylene that are generally safe to use that won't alter the coin.
Posting pictures also helps get more responses and solutions to any questions.
Big different between a proof and business strike.
If your dealing with with an average circulated 52D, not a lot of any value unless your dealing with a variety or error.
Never clean a coin...... unless you want it to be worth face value. There are a few solvents such as acetone and xylene that are generally safe to use that won't alter the coin.
Posting pictures also helps get more responses and solutions to any questions.






















