Didn’t watch the video, but as I understand it, the theory is that the coin has a hole because it was worn as a pendant at some point. Definitely a rare one as Brutus & company were only minting them for a few months before Octavian came in and ordered the coins recalled and melted down.
I’m not a coin collector, but the ancient one that interests me is that of Lucius Aelius Sejanus — perhaps 20 of those survive, roughly one third have been reported in the past twenty years or so.