Yeah, I thought it probably was – the Jesus-on-the-cross and the twelve apostles around the edges were clues – but didn’t know for sure. As it turns out, it is not a bible cover but the cover of a Holy Roman Emperor’s book of gospel excerpts. It’s called the Pericopes Of Emperor Henry II , more info here: https://en.wikipedia.org/wiki/Pericopes_of_Henry_II
MATTHEW'S ISLAND 
Definitely a Bible cover, Matthew, Mark, Luke & John in the corners. Might even be a New Testament or a gospel book specifically.
Yeah, I thought it probably was – the Jesus-on-the-cross and the twelve apostles around the edges were clues – but didn’t know for sure. As it turns out, it is not a bible cover but the cover of a Holy Roman Emperor’s book of gospel excerpts. It’s called the Pericopes Of Emperor Henry II , more info here: https://en.wikipedia.org/wiki/Pericopes_of_Henry_II