Nice find. Cleaning is a personal decision. Most coin buffs only clean a little. I evaluate the cleaning process this way. Clean enough, with soap and water to see date and ID coin. Check price. If is is over $100 don,t clean any more, maybe get professionally done. If $25 or less clean repeatedly until cleaning process does not make a noticeable change. If during the process y see a lot of detail, I may leave it here. most of my good finds end up being shown at my club so I usually stop when the detail is good, completely cleaned or not.
A note on the price of a coin. A dug coin usually won,t be worth the lowest price listed in a price guide. Environmental damage can play havoc on buried coins. I have never personally found a coin over $25. Everyone likes to think there finds are worth a lot, me included.
The bottom line is this a dug coin or any for that matter is really worth what someone is willing to pay for it.
Ed D.