2 unknown pieces

Ask for help again,
If anyone knows anything about these pieces.
Diameter about 20 mm, weight between 3 and 4 grams of gold colored.



thanks

I am definitely not an expert in Byzantine, but handled my fair share of early ones. The first thing I saw, was they were perfectly round... too perfect. The obverse were too beat up, but it didn’t look like an outdoor find. Third, one shows a “ lift” of the flan where it appears it was lifted from the cast too quickly. IMHO, I don’t think they are real. I could be wrong.....

Hello,

How can I be sure these are fake?
Can someone explain to me how you set that up?

Thank you.
Luc