Authentic or Fake Mint Error 1802 Bust Half Dollar

The pictures of this coin were received from a person looking to sell it. The double strike is dramatic. Any rare coin collector would be tickled to own such a piece. The question is is it an authentic double struck mint error coin and if so, how much is it worth?
The questions are leveled, the answers are yours…

One of the number one questions we get asked every day is whether a particular coin is a double struck coin, a double die, a mis-struck coin or simply an error coin.

Here is a link to a deeper dive into Error Coins and Variety Coins