absolutely beautiful, it will clean up MUCH nicer, I can tell just but looking at it. It has a nice solid green patina, just take some toothpicks and pick away the dirt, wooden toothpicks are MUCH softer than copper and you will not hurt it one bit, Trust me.........I have dug 166 indians with my etrac and I clean EVERY single one the SAME way.
water, dish soap, and a toothbrush, I get it wet, apply some soap, and scrub away with the toothbrush, when majority of the dirt is gone, I dry the coin, and use the toothpick to remove all the dirt from between the letters, date, etc.....
here is one comparable shape to yours but much cleaner because I removed ALL the dirt. Do not be afraid to use my method, it will be fine!