well .. they are not gold
the first one is silver and the second one has a thin layer of silver on top (which as you can see is falling off)and under it i don't know the material..it's grey to green color ..anyway not all
byzantine coins are gold!
i dont think they are new
i showed them to a friend who is making
jewelry and told me the teqnique they are made is really old.
anyway thanks for replying