Hope Nigel won't object if I just add that................ there is a small and not very clear example of a wine/hock, in this pattern, showing in Charles Hajdamach's '20th Century British Glass' - page 54............it's the blue piece showing in the top left corner. The book page reproduces a copy of a page from a Thomas Webb catalogue stamped 'Overseas Edition' dated 1927 - 28.
Fir Cone appears to be Webb's pattern 27440 and dates to 1903.
Assuming this to be a carafe, then presumably there won't be a stopper. For decanters and carafes I'd suggest copper balls - this piece doesn't look heavily stained, so you're lucky - metal polish might help.
I thought initially that there were two separate pieces here - the red background suggested a different piece from the clear example. Hope you won't mind if I comment that pix for clear glass should be chosen with more care - and a black or charcoal background is probably best.
Nice piece - I'd have thought quite rare. I'm quite green.