Hi Hughie,
That is one beautiful hollow form, (I see no bowl) perfect sphere, I like how you've got the grain to run round the opening and what a finish, just one coat DO and just polish that or a polish too, it is excellent, one very much like this made the cover on WOW yesterday in Spalted Holy 4.5" with 1" opening. what size is this one, looks somewhat round that size, I like it so much well done and thank you for posting it.
Cheers David