most of the older brigade will doubtless recognize this - although it's missing the most significant part (which would give the game away immediately), and which would have sat atop the brass plated cap thingy. Spherical, and about 3"/75mm high - dull brownish/olive colour, with quality ground and polished concave pontil mark, with controlled bubbled decoration; and although bubbles appear to spiral upward, believe in fact they just encircle the object which, incidentally, is hollow. Bearing in mind, perhaps, the lack of importance given to most advertising ephemera of the mid C20 (at the time), then I guess most examples of this item would have been binned or chucked out long ago - I don't recall having seen another. There is a single word logo and trade mark symbol around the base of the metal cap - which will be obvious to those who do recognize the item.
All of which is simply a lead up to the question, which is, in view of the bubbles and pontil mark, was this item made by a well known manufacturer - whose wares are much collected and often in gold/amber - ruby, willow, sapphire and twilight - or am I barking up the wrong tree??
thanks for looking.