Thanks, suea! I didn't invent it and can't remember where I found it either!
I'm not exactly sure where this "half-post" notion came from, I think it was in print somewhere.
I've personally decided I will never, ever use it again, always referring to it as "semi-cased".
It is a lovely, lovely bottle, the stopper is decidedly Scandanavian, but beyond that, I really don't know. I might start thinking about Bertil Vallien and try to eliminate him first, but that's just a notion. Whether or not it will hold water is beyond me.