I am watching this auction on ebay, and apart from the rather interesting use of the term 'Quite good condition - few surface scratches' the 8th photo shows the whole nib unit separate from the rest of the pen. I'm kinda thinking this is not the natural position for a pen in good condition, it looks a bit crackly round the edge of the nib; Is that right?
If not, what would it take to make the pen better? I think a vac-fill would do well in my home, but I don't want a basket case. Looking at Richard Binder's site, it appears that the nib should be threaded, but maybe this is a different type?