#3, which I also associate with the style of Russian iconography, I have heard shares an amazing correspondence with what the shroud of Turin reveals.
The similarities between the Pantocrator icon and the image on the Shroud of Turin are startling. It is too significant to be coincidental. The location of facial features including eyes, nose and mouth are astounding. When a transparency of the Shroud face is placed over a photograph of the icon, they align perfectly. See For Yourself.
“shares an amazing correspondence with what the shroud of Turin”
I agree,
Also the ‘blasphemer’ drawing is interesting to me if it provides any evidence for the shape of the Roman cross, meaning arms out straight from the shoulders vs. in a slight ‘V’ shape with hands overhead etc.,