I've been poking around in
omniglot, which has a number of scripts. I tend to agree that it's magical writing, but I don't know the system. The closest I've been able to find is the
"angelic script", but it's not a match.
I suspect it's someone's magical/ritual item. It may have a masonic connection, but I'm not very confident of that, either.
My 0.00002 cents,
F