The little, piece John shows is really unusual even for MDG. The grid part is green and bubbly and completely clear. It has a really neat, round, quite deeply concave, roughly ground pontil mark.
It's a very favourite thing of mine, and it sits on top of the big boxy noisy thing at the side of the pc, right here in front of me.
We do seem to have gone a little bit off-topic if we're onto MDG.
