I have not looked at Post No 58, but I know the West Brom buses were not navy blue, but a kind of petrol blue and cream but as you say, more blue than cream. Birmingham buses were navy and cream, and in my view, were a bit 'smarter' than the West Brom ones. The West Brom buses also ran into Birmingham, you could pick a West Brom bus up at the same place as the Birmingham ones. I used to mainly catch a number 72, but a 71 (Oxhill Road) or a 73, 74 or 75 (all West Brom) and they would take me to the same place. I think the only difference was that the 72 used to stop at the Hawthorns, whereas the others went straight through, just re-clocking (and I think having a cuppa) at the football ground. I do believe there was a cafe on the corner of Middlemore Road, where they used to get their tea, but I might be just romancing here, I am going back to 1962.