Interesting point on the Harrods 1907 catalogue. I have the glass section of the 1907 Army Navy catalogue saved off and it is full of glass numbered between 14000-17000. From what you say it sounds like these store catalogues are like one big Stuart pattern book going through the years for cut glass. I have pages from the Harrods 1913 catalogue with quite a few pieces in the 18000s, this must be Stuart again. This is very useful for attribution, particularly the 1907 catalogue, as this contains quite a few decorative flower tubes, emerald coil decoration and so on, which is otherwise impossible to pin on any company.