It took a little longer than I first said, but here's the images I promised:
Full view: http://tinypic.com/bi5tw4.jpg
This shows a somewhat different shape to Terry's vase but illustrates a gentle, smooth form of the neck out of the body, which is also seen, for example, in items 6868 and 7107 (and also 7256 & 7412) in the Great Glass site (as linked earlier by Peter). It also shows how an overall gilded decoration can still manage to be "quiet" in its presentation.
This vase is 10 inch high, 3 3/16 inch diameter at the rim, 3 5/16 inch diameter at the widest body point, 2 7/16 inch diameter at the foot and has a good thickness at 3/16 inch. It weighs in at almost 1lb 7oz (650g).
Part of Decoration: http://tinypic.com/bi5wtj.jpg
This is a part of the body decortaion and, having checked the literature, I understand this to be Rococo Revival (or was that in reference to the style and shape of the piece??), which ties in with the fashion of mid-19th century. Again, the Great Glass 6868 & 7107 vases show the similar style. Although I cannot make out the actual decorative features on Terry's vase, it does not seem to be anything like those I would expect for a Richardsons' 19th century piece. But ... I have only seen what I have seen and that is mostly what is shown in the books!
Top part: http://tinypic.com/bi5web.jpg
Underside of Foot: http://tinypic.com/bi5wn5.jpg
Both the Rim and Foot have age-rubbed gilding, which is in keeping with a 19th century item. The rubbed gilding of Terry's vase seems to me to be less severe. But the main thing I notice when studying Terry's pic in enlargement is that the gilding looks to be "burnished", which suggests a much later production.
Mark to Underside of Foot: http://tinypic.com/bi5wza.jpg
This is shown for interest. It is one of the known Richardson marks - and has a "P" code which, according to Hajdamach in "British Glass", had not been identified in terms of its meaning.
Going back to the comparison of green colours with the Great Glass 7107, I am reasonably sure that these are completely different and that it is not just an effect of the photography or computer screens etc.
So in summary, although I can see 19th century style and features in Terry's vase, on closer examination I don't think it is. It's the intensity of the green and the very full decorative elements (whatever they are in detail) that are the main points that cause me to change my mind.