A friend of mine who hails from the aforementioned Gallifrey once told me it doesn't pay to muck about with time, despite the fact that he (now she, it's a long story...) does it all the time.  To that end, I got this item from an alternate timeline in which a breakaway kingdom of Saxons ended up in what we now call Scotland.  We are all familiar with the other Saxon kingdoms, i.e. Essex, Wessex, Sussex, and Middlesex, not to mention Kent, Mercia, and Northumberland.  In this other timeline