I found this item on ebay, although it's a model, what I'd like to know is, was it actually based on the real thing? As you can see it has the initials EWJR and return empty to Ettington, which all fits in with the real world.
It was listed as a Carette/Bassett-Lowke model of 1909. Carette were a German firm based in Nuremburg and did make coaches for Bassett-Lowke and, although they probably took the date of 1909 from the plate on the model, it also fits in on the time line.
For your info it was sold for £107!
Many thanks for your informative reply. I would certainly like to get hold of a copy of that copy of 'Model Engineer' you don't happen to know the date of it do you? Also I would be very interested to see a copy of the photo of the wagon used at Greaves Sinding, any chance of uploading it onto this thread?