I've bought some coins last friday, and these one are yet to be identified:
On #1 the emperor's name is cut by the edge. 20 mm.
The #2 looks like a Licinius follis, "SOLI INVICTO" type. 20 mm. If correct, what city/mint it's from?

On #3's holder it was only written "India princely states, paisa". 20 mm. By the way, I have zero experience of indian kingdoms, it's my first one.
There are others, but they're already identified when I bought or I could figure out on myself (thanks Petrus Ascanus for the post about sasanian coins on this forum yesterday, I got one too and I was about to ask the same thing).
Thanks to all who read this.