COINS debunk Islam in the 7th century! (#5)

It is well known that the best way to find out about a place and a period is to use artifacts from that period, and from that place, especially if they don’t disintegrate nor deteriorate. They are even more important if they contain items written on them which give us names, dates and religious reference points. Coins do all of that! This includes the coins of the Middle East in the 7th century. When rulers came to power in that part of the world, they quickly minted new coins to introduce themselves to the populace, knowing that the coins would soon be in everyone’s hands. They would put their image on the coin, with their name, and always a religious icon to tell the world what religion they belonged to. So, Christian coins had crosses, and Zoroastrian coins had fire-altars. Every coin minted in the Middle East, in the very areas where Islam supposedly began and expanded, and in the very century Islam was created, are either Christian or Zoroastrian. Not one of them up to 692 AD, 60 years after Muham