Well, I can tell that the seller's image was made in sunlight, and I can see that it has been made a little lighter for posting (consider shadows
cast by sunlight to lower left of coins), and I know that
his sunlight images are a
bit more cyan than my own photos of
his coins, but how you got your iron-oxide colored images, unless you were using film camera with outdoor film in it under an incandescent light-bulb source, I am at a loss to see how you got that image.
By using Photoshop's Image>Adjustments>Variations tool, and assuming that the background was fairly neutral, I got it to where you see, but even so I think it's not at all like a
Severina antoninianus. If you provide some more info, perhaps I could
help. I mean, the goal when one is asking about coins is to post, if one possibly can, is an image that looks like the coin in hand.
Pat L.
I apologize for
writing 'Salonina' for 'Severina': I was only looking at the colors!
P.S. You didn't use flash, did you?
I attach a flatbed scanner image, unaltered, of her husband
Aurelian. Though it's the reddest coin I own, especially the
obverse, it's not as
red as your image of
Severina.