Heather, the Eastern region seem to have been quite content to continue with several of the earlier LNER patterns - presumably on the principal that only spanking new stock would carry the new fabrics designed especially for them?!
Many years ago, when I did the sketches for this pic, the coach was quietly rotting in a siding, and although most of the interior had been ripped out, four complete seats remained in situ - complete with the extremely badly damaged and faded fabric that was clearly still fitted when the coach (in lined Maroon) was withdrawn! I was able to remove a small fragment that included a protected section from underneath a squab.
Further extensive research - including at the NRM - revealed that this pattern; "Tollerton", was very widely used across the LNER and Eastern Region. Oddly, none of the carriage restoration groups have ever mentioned it - or indeed seem to have even heard of it?!
I produced some deliberately simplified artwork - by tracing off the surviving section, and filling in the gaps from photographs, for a Love Lane project.
The colour will need mucking about with and bumping up quite a bit for a workable print off - I think ours came out far too light as it happened, but never mind!
The section drawn is the repeat pattern, times four - the total scale size of the above image is 19 inches by 12 and three quarter inches.
I do hope you might find this useful, if not for the current commission, but any others that might come your way?
If anyone else would like to have a go with it as well, then please feel free!...
Pete.