Assuming the slab is legit (the fake slabs are getting too good unfortunately) then it was handled by a knowledgeable expert on ancient coins. I’ll take the opinion of someone who had it in hand over my photo opinion every day. If you want my opinion from the photos: if it was a coin I wanted from a dealer I had no reason to doubt, I’d buy it.
Ah! So you're the one that snagged that one...Congrats! I had more than half an eye on it, but decided to bid on something else at the last moment (thinking: 'tet plus Leu plus 2021 equals ridiculous hammer'. Turns out I was wrong for once). Luckily we didn't end up in a bidding war. Happy to see it went to a good home.