CR 6114, 3631, 6384 and 6459 are on the point of a coal train at Bay Tower in Baltimore, 3/84

SD45-6114, GP35-3631 & SD40-2s-6384, 6459 are on the point of a S/B coal train. Its either a Morgantown (UMP) or Chalk Point (ULK) train. I never heard the symbol. Bay Tower is to the left of 6114. 2:30PM on 3/3/84 in East Baltimore, MD. These 80 car, 10,000 ton trains usually needed a helper to get through Baltimore.