have now found an id for this piece, whilst in pursuit of something else

Would appear to be Rindskopf from somewhere between 1920 and their bankruptcy in late 1927, and is described as a 'Sellerieglaser' (apologies as the 'a' should have two dots and I don't know how to). Of all the shapes of Celerys I have seen this must be one of the more unusual. However, I would appreciate a second opinion please, so if anyone has the book, it is on page 123 - row three - the size is about right at 13cms.
Ref. 'Collectable Bohemian Glass 1880 - 1940.......Robert & Deborah Truitt. 1995.
I was unable to see the piece in any of Pamela's sites, including the Master Books. thanks for looking and any confirmation appreciated.