First one is 3rd century Roman antoninianus, you can clearly see the radiate crown on the emperors head. These were initially silver but later the amount of silver was lowered and the coins were just silver plated. Since this one is bright red it was most likely cleaned which would scrape off any silver coating. In my opinion this one is Gallic empire, maybe Postumus. The emperor's name is written on the obverse but I can't read it on yours, all I can see is "S PF AVG" which isn't enough.
Second coin is in my opinion a Kush tetradrachm. Examples of such coins can be found on
this page,. I'm not sure about this one, try to match yours.
I'm sure others will take care of the third coin as it's something I regularly see on the forum but it's not in my interests.
Maybe other members will also share their opinion on the first two coins just to be sure.
I collect and deal in ancient Roman coin. In case you're looking for affordable ancient coins or need any help with the coins you already have send me a message.
