Bugger! I'd all but written a dissertation then, and my phone battery went flat! Probably a good thing? Anyway (briefly, now), I think point 4 is nothing without points 1,2 and 3! So, I was just about to break down my own values, based upon the remaining 3 points, when I realised that surface preservation was my most important feature of a coin, and deserved at least 60%...but then there was lustre? Well, that's surface preservation, in my humble opinion??? I gave up, then!