The first thing i though was i wonder if they where trying to make one of the vases/bottles and it went wrong so changed the shape.
I know they tried very hard not to have any wastage and seconds where not really known of as such, it was all just sold, unless to badly disformed and so on, i.e if it started colapsing beyond repair on one side, he just pulled down the other sides to form the bowl/ashtray, then it could still be sold instead of having to start again
I believe Michael made alot of these textured vases as they where so tricky. It looks great in my collection whatever it may be, i only have one other in the textured range (i stupidly sold a quite a few piece, years ago) and that is a 21cms round texture vase in earthtones, the same as on page 53
michelle