I'm wondering at how new the wagon is. The exterior seems very clean, almost glossy, with not a trace of limewash. The interior however looks a little pock-marked. I believe that limewash was applied to the full height of the interior, so I would assume what we're seeing is rather knotty wood that has never been disinfected and hence a brand new wagon. Similarly, I would assume that the holes for the GWR plate would have been drilled as a matter of routine during the course of construction, for the plate to be affixed at a later stage. So their presence should not be taken as evidence that the plate was ever actually fitted.