thanks for the ebay link. There is an (unwritten) practice here that we don't comment on individual listings, but from what I can see the word Newcastle, which forms part of the description of similar decanters looks to be at odds with McConnell's use of the word, in terms of general shape.
Similarly shaped bottles to those shown in your link appear to be described elsewhere as straight forward c. mid C19 pillar-moulded ribbed bell decanters - and you can see the bell-shaped likeness in most of them - one of the most distinctive shape of all bottles.
My opinion is that this ribbed bell-shape of decanter - probably dip-moulded rather than free blown - appears not to be related to those prussians and tapers from a little earlier in the C19, which were originally called 'Newcastle' type (whether rightly or wrongly)
Also, as far as I can see in the books, the supposed Newcastle bottles look to have almost always had the applied three neck rings which the pillar-moulded examples don't.
There may be the thought in the minds of some sellers which believes that word association - especially if implying rarity - gives added kudos and value.
As an alternative to re-locating your dwelling - you might consider buying a shed or two
