Lars, from 1903, all Prussian Train detachments adopted the spike helmet, which was already worn by Train officers before that date.Thanks for showing.
I would expect Train to be wearing a Tschako rather than a Pickelhaube; maybe a war-time expedient, or a different unit?
Lars
You are most welcome and by the way, the same applied to all German states.Aaah, that explains a lot, thanks for the correction