How Do I Clean A Coin?

Course sandpaper will do the job. Seriously, don't clean any coin. Leave em alone. Welcome!

I am going to go against the grain here and say do whatever you want with the coin. Normally, cleaning a coin is a bad thing and will ruin the value because cleaning damages the original finish of a coin. However, this coin is common circulated European pocket change- Belgium minted 120 million 2 Euro coins in 2000- and will not have any real numismatic premium in the foreseeable future. The center is nickel brass which will naturally tarnish to a brown color but it does appear to have corrosion spots behind King Albert's head and on his cheek. Anything that will clean copper or brass will do the trick but the result may be an overly bright surface or the color might even be pinkish-orange. You may also want to try rubbing on a baking soda paste or toothpaste(regular, not gel).

Remember, cleaning anything of value is one of the easiest ways to destroy that value but there is really no harm in polishing up common pocket change if you just want it to look bright and shiny. However, when in doubt, DO NOT CLEAN!

with you badthad I'll take your advice

What about olive oil? I heard this is a good way to not harm it and get some cleaning done...Your thoughts?

Let me quote one clever man:
You may think you own the coins in your collection, you're really
just taking care of them for the next owner.

Many have said they had good results from Olive Oil. Also, as you probably have seen many will say Lighter Fluid, Lemon Juice, Battery Acid, Vinegar, Tomato paste and even Nitro Glycerine. An M-80 fire cracker may also blow off some dirt.
Just remember that to run out and spend money on something for cleaning a coin may just be real waste of money and your coin looks OK to me anyway. I'd still say leave it alone.