Hello everyone,
Great community you have here! This is my first post.
I was offered 2 Byzantine Gold Coins. I need your help to ID & Authenticate these 2 pieces.
According to my research one is:
PHOCAS 602-610 AD.
w: 4.0g
d: 20mm



& the other one:
THEOPHILUS 829-842 AD.
w: 3.9g
d: 19mm



Is it possible to tell if these are authentic coins from the images?
Many Thanks for your help!