A cut half of a Saxon or Norman monarch will retain more of its value than a Henry III Longcross, for example. However, as has been mentioned, it is all dependent upon the eye appeal and rarity. A cut half of Ilchester for Henry III will go for far more than one of Canterbury and the same can be said for rarity of monarch and class, too. A catalogue would be nigh on impossible as there are just so many variations that the catalogue would be mammoth in size and pretty much worthless.