You know as well as i do a coin like that that would have a direct line of provenance. They don't just turn up , if they did they would be put before an FLO somewhere and recorded. The reason i said it's cast is precisely as stated it's got casting bubbles all over it which have been made even clearer by cleaning it. It also looks the same as one's that have been identified as known copies even down to the sooty look which has now been removed from it. He's even left feedback with a known seller of them field_walker.
There not even good copies lol , souvenir shop ones!