Hi Ivo, thanks. No it doesn't wobble , but to my eye in any case the bottle looks much much better without it, the stopper unbalances the proportion of the whole item. My gut instinct was that it didn't belong with it at all, and wondered if the auction house that was unpacking and matching the glass had got it wrong, and put it together just on the basis of the colour alone, or if the original owner had put them in together.
I hadn't seen any Tynell bottles/decanters, only vases, up to now, so just thought it safer to check in case it should have had a stopper, but I am very pleased to hear your one doesn't have one either.
I am finding lots of Emma vases around, but hardly any in the bottle shape. Is it less common do you know?