Fabius

For Aurelian this website is also useful: https://ric.mom.fr/en/home

I think your coin is #1695: https://ric.mom.fr/en/coin/1695

On OCRE they have it as being minted in Siscia while on MER-RIC they have minted in Rome

Great idea for a thread. Like @expat I have chosen a Carinus coin from the Lugdunum mint:

Apparently that is Carinus himself posing on the reverse

Some great London coins so far! So many types here that I don't have - I would particular like to own an ADVENTVS AVG like the ones shown by @Severus Alexander and @Harry G and also any coin of Carausius or Allectus. So far I have not been able to find a decent one of those in my price range.
Here's a couple I don't think we've had yet. Constantine I - SARMATIA DEVICTA: 

And a Constantine I camp gate (I can only see Crispus so far in the thread):

Love it @David Atherton! This thread is making me want to expand my hippo collection 🦛. I know we've already seen Otacilia multiple times in this thread, but I can't resist sharing mine too.

Interesting coin @Shea19! I really like the "reverse" with both sides of the coin clearly visible. Like you, I don't collect error coins but I think I'd also have been tempted to add that to my collection if I'd seen it. I have a double strike as well, albeit not a flip-over like yours. The obverse of this Gallienus is double struck, but the two strikes are aligned at quite a close angle. This results in an evenly spaced obverse legend of GALLIENVSS AVG - with an extra S, and a big chunk has been taken out of Gallienus's neck. You can see evidence of the double strike most clearly around his nose and chin.
 

3 minutes ago, Restitutor said:

Congratulations @Fabius for being our 200th member!! 🥳🥳🥳

Thank you - happy to be here!

My Juno coin is the same as the OP type, except Faustina is shown wearing a stephane. RIC III 698. It's also one of the nicest ancient coins I own in terms of condition, I really like the detail