Its a possibility Pete, but he's selling off more of the modern stuff (yet still shills it on his channel) and is heading towards older numismatics. He is selling the Gothic etc for his sidekick Marc, Marc in my mind is the shiller and those were his coins apart from the Gold Hawking 50p which was also resisted, so that means there'another shiller involved as that was a different winning bidder, but all in all Numistacker knows who they were and their intentions.
Slabs do have their advantages 😉