Thanks for the responses so far.
I have attached another pic of the first page of the chapter the above entry was in, all data copyright of the IRS of course.
As mentioned above, Norton is right on the Staffs/Shropshire border on the Market Drayton - Stoke line. Through the good people of the North Staffs Railway study group, now have plenty of track plans etc, none of which suggest any rail served industry such as a coal merchant. There was a weighbridge behind the station with a couple of sidings at one point.
I think I will just end up getting some custom decals printed as I’m very aware that it might potentially not have existed in the guise mentioned, that EG Keay actually owned wagons, and that any chance of a photo is a real needle in a haystack odds.
Therefore, perhaps the question should be ‘what information would appear on such a wagon?’
Thanks all for your input.