Sooo...that makes it a definite 45/0, and only six of those had the trapezoid grill as far as I can see - so not 45008, 019, 022, 26, 41 and 56 as did all of the 46's and a number of the 45/1's which all had the foot holds removed completely. The vertical grille is a bit trickier, I would recommend checking out the peakdieselarchive website as they have pics of 'em all but at various stages in their lifetime, but a great resource.