1) The font is wrong 2) The portrait looks to be in low relief. These are in very high relief. 3) It's far too round 4) If you are offered a multi-thousand dollar coin from anyone other than a reputable dealer or extremely well known and established seller with a *rock solid* return policy, it's best to assume it's fake and take a pass. Your odds of throwing money in the garbage are much more than your odds of making a major score.
New Sale! Inexpensive classic Greek silver, over 2,400 years old!