Bruce — Sowerby "Star" flower holders were made in three sizes and three shades of green, so we need more information to at least define what you need, before even starting helping you to find the correct one.
The best way of checking the size is to tell us the plinth number, if it has one. They can be very faint, or not be present at all. First the number. Is it 2506, 2536, or something else? Now the font of the punches used to stamp the number into the mould. Is it large and flamboyant with lovely blobby ends to the characters, like
this, or is it small, thin, mean and characterless?
Now the colour. Choice of three main colours:
1. A greeny yellow, looks like vaseline, and glows madly under UV light, or2. A warmish mid-green, which glows fairly strongly under UV light, or3. A mid-green which doesn't react at all to UV light.The three colours are each fairly consistent, due to a superb glass technology department at the Sowerby glassworks, so, once we've worked out the colour the flower holder should be a close match. If you haven't access to a UV lamp try a disco / nightclub / lighting shop / stamp collector.
... and up front apologies. We've got the builders in from tomorrow, so I am likely to be off-air for a couple of weeks.
Bernard C.