One facet of railway equipment building is assigning and applying a reporting mark to each car, locomotive and caboose. The first planned rebuilt boxcar is SOU, 123376. This is the Southern Railway reporting mark with the car number. Part of the rebuilding was reassigning a new number. The old car was SOU, 23376. omscaler wanted to make the car more realistic and did a little research. The old number was incorrect for the car type series but a similar number was located in a historic roster of the actual equipment. Hence the addition of a one in the first position. The new car will be a Pullman Standard type one, known as PS-1. This car will be the first car identifiable as this type. More are planned as part of the general car upgrade. Moving forward, omscaler