That coin was clearly artificially toned and I'd be surprised if it was authentic, however, by lookng through his store, I'm wondering if he bought someone's collection? He has some serious coins and many look authentic, so maybe the OP coin is authentic but I sure wouldn't buy it, not even for $200! Ribbit
You do realize the second photo is taken at an angle and the proportions are all messed up as a result???
this week Coin world After read and seeing the photo of the China coin mills. I not sure if any raw coin on ebay like this is real