The reason that I brought it up was that this loco is so new. However, dirt sticks quickly with steamers still around etc. Even newer photo probably sitting on her bogies for the first time at North Wall which suggest you're correct about the lack of a black line, although I don't see any here to be honest. Were they stripes on the skirt sprayed on, or applied like Tippex lines on later liveries?
I have forgotten to whom this should be credited and i apologise in advance
That's very interesting, Jim as we have tried to infer color between B&W photos before. I suppose in a single photo the colors would at least be uniform and the there's definitely some lining issue on the snails and number which des not appear to occur between the body color and lines on the front skirt