those bottles missing their stoppers look to be fairly typical of decanters from 1830 - 40, so I don't think they're much earlier than this date, if at all, and this is confirmed by the fact that this precise image, with provenance, appears in McConnell's book. The caption in the book, also confirms the source as being 'The Pencil of Nature' dated 1844, and states that the photograph shows the window display at Apsley Pellat's London showroom, so presumably British pieces.
I've recently bought a book 'City of Laughter - Sex and Satire in Eighteenth Century London' - gives a great insight into Georgian and Regency life between from about the middle of the C18 to the end of the Regency - 1830 ish, based on the satirical/political/debauchery issues of the day.
This comes back to the topic of the cartoons and engravings we were discussing with Peter some weeks back - re the illustrations from Rowlandson, Cruikshank and Gillray etc.
In view of the nature of the subjects covered, these illustrations are a marvelous source of contemporary styles of drinking glasses and decanters - drinking was a very popular pastime - and helps to confirm the dating of certain shapes etc.
Images do need to be of a certain clarity and sharpness to be of real use.