This is what I think "The Mark" might look like. "and that no man might buy or sell, save he that had the mark"

Revelation 13:16‭-‬17 KJV

 And he causeth all, both small and great, rich and poor, free and bond, to receive a mark in their right hand, or in their foreheads: and that no man might buy or sell, save he that had the mark, or the name of the beast, or the number of his name. Click Here To See