The railroad sleepers in the train scenes are concrete ones, available in Romania only in the late twentieth century, and completely unavailable at the time of the plot. This is despite the wide availability of wooden sleepers filming locations across Romania.
Despite the rather well cut of passing wagons images, these are also of modern cars, though not the locomotive.
CFR series 150 locomotives started being built after 1943, way after both the young and old prince times of the action.