Original state with wheel arrangement 4-4-0
One of the Philadelphia & Reading inspection engines was number 100, built by Baldwin in 1902. It originally had a 4-4-0 wheel arrangement and a narrow boiler. The boiler was deeply embedded in the passenger compartment and there were four armchairs on each of its sides. In 1913 it was rebuilt with the wheel arrangement 4-4-2, although it was technically almost a new vehicle. As a result, it had larger driving wheels, larger cylinders and a new boiler. This was also long and small in diameter, but now also had a flat Wootten firebox. It was now able to pull two passenger cars without any problems and was in use until 1929. 