Hi Patrick,
I have read all the comments on WF.com and I am working on some photos right now which I will post here. (Not sure how to do it on WF.com , Tony did send instructions ages ago but I have lost them!...) I will also give exact measurements (I have callipers !) and weights. There is no grinding and the colour is more like forest green, it's a darkish green. The other thing that could have happened is that there could have been a reduction in the diameter of the silver sleeve to the top. Somehow it could have been taken off, cut to size and re-soldered back on. There is a join to this sleeve and the patina matches on both sides of the join (I will post photos of this). So it is my thought that neither the top nor the glass have been adjusted in any way. I think the chances of finding a top which fits almost perfectly from another WF piece are minimal. I will post the photos tonight but I have just got in !
I have been so interested in all the comments on this thread ...very interesting ! Cheers, Mike.