Wiech points out many similarities. I agree with him. But he fails to point out one similarity that gets mentioned quite frequently. Notice the double line on the neck on the image from the shroud. This is caused by creases in the fabric. Now notice the double line on the neck on the coin images below. Question 1: Are the lines on the coins copied from the shroud or is this simply a neckline of a garment?
I don’t know. I think it is speculative to think they are copied from the shroud. Even so, there is a seemingly very strong coincidence. And the coin maker would probably not have known of the full length naked body on the shroud. Perhaps he saw it as a garment neckline on the shroud.
Question 2: Two coins? The one resting on a piece of cloth, according to Wiech (and many others) is a Justinian II coin from A. D. 692. The one on a white background, according to Princeton University’s Curator of Numismatics, Alan Stahl, is a Justinian II coin from A. D. 692 acquired by Princeton in 2009. They do appear similar, strikingly so. But they are also very different.