diocletian coin identification [επιλυμένο]

just bought a diocletian coin, but not sure which mint this is, the seller says it's minted in thessalonica but it says HTS on the back?

Your vendor is correct, MTS M I believe stands for Monetae, TS for Thessalonica. 

I see, is this specific coin on numista?

Since i can't find the MTS mint mark an alternative solution would be Heraclea. Maybe N#85835 with the last letter being ς instead of S. Either way, if the price tag of 95$ is correct I suggest against buying it.

Its sold in australian dollars don't worry

https://www.ma-shops.co.uk/sesambestcoins/item.php?id=59603

I think it might be this one, what do yall think?

Yes, that's it. And sold at a more realistic price. 

I apologise for my laziness here in not applying more rigour, almost all the time one sees TS it means Thessalonica, but I absolutely should have spent the time to verify what I was saying before posting.