The only explanation I can think of goes back to the idea of ICC "out of service" records being maintained on the engines beyond the time they were actually in use. Maybe someone that knows how this reporting to the ICC worked could enlighten us on this. Another thought depending on how this worked back then is that SVRy didn't inform the ICC that the engines were out of service and instead the out of service date Earl Emlaw lists is when the engines ran out of tube time and were legally out of service.
SVCartoad was telling me awile back that SVRy master mechanic Floyd Carpenter singlehandedly (with occasional help with heavy parts from anyone around the yard he could scare up) overhauled the 19 during the worst of the depression when all other shop employees had been laid off. I assume this must have been around 1930-33. Anyone know for sure when this was? If so, then it seems 19 would have seen a lot of hard use by 1940 and easily been in need of another overhaul.