Yes thanks, I've been using the sequential numbering to get a rough date for the pieces I have from that catalogue. I've got a few now, found here and there on eBay. I'm intending to write a chapter on early English pressed glass when I do my book on Manchester glass, and I'll weave in some French pieces for comparison. At the moment I'm in the early stages of rough draft for my book which looks exclusively at Percival Vickers.