Julie - thanks for the link.........as you say, your link isn't exactly the same as mine, and although the design appears similar, your picture shows an example with a rim design of uniform scallops all round, and the wording describes the piece as 'crystal' - so we must assume the piece to be cut lead crystal. But the main reason for not being like mine is that as far as I understand it, pressed glass didn't make an appearance until c.1840 (about three years into the Victorian era, and long after 'mad George)

- so your one would have to be cut glass. However, since one of the selling points of pressed glass was its imitation of cut pieces, then mine might well be a copy of a very similar, and earlier, cut design.
Neil and Sid - sincere thanks for your time spent on this one for me. Sorry to say that despite hours spent looking I'm unable to find even a vestige of a mark or number - I don't believe it ever had a mark - there is in fact very little wear on this piece - the underside is almost as new - although some contact wear (from the inside of the caddy perhaps) on the lower parts of the sides. You don't mention the heights of the P.V. examples - does your catalogue give details?? I would like a copyh of this P.V. catalogue - is it something I'm able to buy on the open market, or is it a specialist thing? Of course, I can go to Kew and look at the details for 49779, and would agree that squares do seem to be an earlier style of design.
Scavo - Keep looking at as many shapes and designs of pressed glass as you can - go to as many boot sales, charity shops, antiques markets as you can. It shouldn't take too long to recognize the basic shapes of things such as sugars, celeries, salts, baskets, honeys, jams, butters, tea mixers - and don't forget to get some books
