Some Parts Are Interchangeable - A close up of the driving rod bearing on engineer's side of the rear set of drive wheels shows that the rod and the bearing was transferred, or originally manufactured for #4002 (stamped in the upper right corner, and then re-stamped #4014). While photographing #4014 up close, I noticed other mismatched parts were installed as well. In addition to parts numbered as #4014 there were pieces stamped with the numbers 4007, 4015 and 4020.
Generally speaking, shots where less than a full engine is shown. But I want to feature details, not half engines or full cabs, and definitely not full nose shots. Just shots where someone has zoomed in with purpose.