Evening mate - I was thinking more about the idea of medieval tags - this a a panel from the Book of Kells. Produced somewhere around 800ce - this style was only found in Ireland, Scotland or the north of England - by Celtic Christian monks. Why is it a tag? The whole thing is actually just two letters. It's a chi-rho, C and H in ancient Greek - the first letters of 'christos' it was a symbol of the early Christian churches. Church tradition holds that the letters were adopted as a divinely inspired battle standard by Constantine the Great at a crucial moment - some 500 years before this page was drawn. Cheers - I.
@Barry Giddens @Olie29