Hi,
Very complicated stuff!!!
Look at the center of the wappen closely
You will see that this is not the proper center for the III/RJR66. Oak leaves on the right side and laurel leaves on the left side of center were worn at the JR94 (
Sachsen-Weimar-Eisenach). One can also find such centers on helmets of following derivated Reserve and Landwehr units formed through the JR94: I + II/RJR94, III/LJR32 and III/LJR83.
Helmets of the III/RJR66 (likely those of the II + III/LJR36) came from the I + II/JR153 (
Sachsen-Altenburg). Their centers show only laurel leaves on both side of their center... Exactly the same for the wappen worn in the I + II + III/JR95
Sachsen-Coburg-Gotha and Sachsen-Meiningen (and following derivated units: I/RJR71, III/RJR82 and I + II/LJR82).
But......We had a great discussion on the french forum, because another perfectly untouched helmet marked 1905 and III/RJR66 with such a "wrong" center, helmet perfectly named and tracked to a Feldwebel who was KIA August 1914 exists too. We must admit that those very small states must have had some lack of "correct" centers at a time for helmets that moved to thier RJR and LJR...
For comparison, the ebay helmet:
Philippe