No!
However, I do have a small interest in mould-blown tumblers. I'm not really sure why! They appeal to me much more than the transfer printed ones.
This is sort of a mould blown tumbler. There must be a mould made for it somewhere, you would have thought it might be easy to id, there would have been more than one made.
However, it would appear its not as easy as one might have assumed at all!