So, I wonder how likely it could be that he was awarded honors not listed in the 1916 nor 1918.
in 1916 these awards would have been worn on the breast. It appears only the Franz Joseph would be worn on the right side. (Opposite breast side of medal bar) it looks like his Franz Joseph maybe without War decoration.
Bayern Militär Verdienstorden, Offizierskreuz mit Schwertern
Bayern Verdienstorden vom heiligen Michael, Offizierskreuz
Hohenzollern Hohenzollern Hausorden, Ehrenkomturkreuz mit Schwertern
Mecklenburg Greiffenorden, Offizierskreuz
Preussen Johanitterorden, Kreuz der Ehrenritter
Österreich Franz Josefsorden, Komturkreuz mit der Stern