David,
I checked into that tender lettering myself. In a book I have on UP Turbines (Can't remember the name). But the short of it is the Veranda's were delivered without tenders, then maybe 6 months or so later they received tenders. At first painted like the tender with number 61. By 1956 or 57 they were re-lettered like the tender on 69. I went with the 69 today.