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Hi Nemmie.
The bottle is a hybrid, in that the base and the stopper are by different makers. The base looks like a Richardson piece to me, but the stopper comes from a different source - an unknown Old English maker I have referred to in various articles and talks as 'OE 2'. Your link to my webpage shows a typical OE2 bottle, with single cane stopper. The bottle is probably from the 1890 to 1910 period.
It is rare to find a Richardson bottle with original undamaged stopper, as the shaft was usually as thin as a pencil, and easily broken. These Richardson stoppers were concentric millefiori designs that usually used some of the same canes as the base, and now turn up as 'miniature' Richardson paperweights.
Alan
PS I have added an image of a selection of OE2 bottles and paperweights to the web page mentioned above.