One would expect that everyone in the same unit would wear the same type of helmet plate; Joe has posted some photos before that seem to refute this. Here is a Landsturm example. 16 of them are wearing M1860 Tschako with the old Landwehr cross Wappen, while 6 of them wear the M1860 Tschako with the original Jäger chickens. The question though: are the Tschakos with the Landwehr cross Wappens old Landwehr Tschakos that were retired in 1881 when the Landwehr adopted the Pickelhaube? Or were all these Tschakos in this photo old Jäger Tschakos retired as the M1888 and M1895 Tschakos replaced them, and they just did not have enough Landwehr cross Wappen to convert them all?