As a coin collector as well as a detectorist I am not a fan of cleaning coins....I like the way the patina looks on coins I dig,however if you plan on keeping it and want to make it look nicer try microwaving peroxide for 20 seconds or so and drop the coin in it and let it soak for a while up tk an hour and remove it and gently scrub with a soft bristle toothbrush and run under tap water....repeat this until you are satisfied with the way it looks....again I am not into cleaning my finds but I have done this to the colonial button in my profile picture and it still retained a nice green patina....I only did this because could not make out the detail at all when I dug it....it was all crusty and looked completely toasted.....little by little the detail emerged and I was very happy with the outcome.....I will keep this and pass it down.....just think about it alot before you do it...although you should have great results as stated earlier in this thread it will hurt the value and cannot be undone.Hope this helps congratulations on a nice find,Happy Hunting.