Ted Hikel posted:
While you think you may be looking at an ABBA set you are actually looking at two locomotives each made up of a cab and a booster that were not identified individually. Hence the front two are 103( or 103A) and the rear two are 103A (or 103). The cab and the booster were connected by a drawbar and could not be operated individually or separated outside shops for several reasons including the cab not having the batteries necessary to start it and the booster having no controls at all. The cab unit also had the fuel tank and the booster had a water tank for the steam generators and no fuel tank. Later on the railroads identified them individually but not at this time. These were sold to the Southern RR and became their #6900. One of those two cab units was the one restored for the 50th anniversary (I think 103A) and the booster was also owned by the Southern RR but not part of this set.
