According to Mark Hill's book, this signature dates to the late '60s into the '70s, although the colour may well extend beyond that period. 135mm/5.5/16" tall, with the top hole as in the pic., although use isn't obvious to me, and not a shape I can see in either the book or on ebay (at the moment). After the first half inch into the neck, there is an egg shaped opening about 2.75" in depth. Suggestions might be a rather over-heavy stem vase or candle holder, but not really sure - anyone think I'm might be getting warm. Thanks for looking

Ref. 'Mdina Glass & Isle of Wight Studio Glass' - Mark Hill - 2006.