Thank you Old Goat, for the info. and suggestion.
I received the box car yesterday, saw the ends minus the markings, I checked online and saw Lionel's color photo. showing NO marking on its' 'B' end.
After, a further check online, I did not find the same box car with this light gray top half and maroon bottom half, but I did find three prototypical color photos. taken in Late '50's, to mid '60's of D&M box cars, with different paint schemes and in the three photos. the ends that are visible, in the photos., appear NOT to have any markings.
That, is why, I am asking for expert help, on this forum.
Ralph