For so much effort expended it bothers me that you did not color correct. On my screen, the reverse of the Carus looks decent but everything else is red. I have no use for the edge reflection as used on the Gallienus and even less love for the blank space at the top but I do like the Crus style reflection showing the axis. Overall, I suspect the contrast may be just a little more than necessary but it is always hard to say where to draw the line on that. As general rules, I tend to over contrast and over saturate colors and find I like it better when I back off. Especially when using coins with less than perfect surfaces (as with 99.9% of silvered ants), a little soft lighting and restrained contrasts can be easier on the eye.
Except for the red color, these are better than 90% of the coin photos we see. Light angles are good and they show care in presentation. Just opinions.