I am giving this coin long soaks in dw and using a dental brush on it and picking at it with an exacto knife.It will be a long time until it is ready for photo!
Thank you for recent comment!
PS/Under the hill and the other points you state is red and very hard.
Red surfaces are parts with bronze sickness, so these parts should be removed properly and carefully, and if you have no experience, you should leave them such...
Also, that is reason because owner didn't clean the coin totally... cleaners with experience know what coin is "healthy" and such coins have been cleaned totally,
coins with some problem on surface stay half cleaned... Why? It is attractive coin and someone will buy it, and get lesson about bronze problems in harder way...
I suppose this coin was not so expensive, but you should be careful with half cleaned large bronzes in the future...