Here is a question.... i can see this being a WW1 officers bar if the medals were simply "hang in" medals, where they could have been returned to his old bar at some stage for whatever reason.
But these are sewn in medals... and they are not cheap medals even at the time...
Usually an officer took an old bar and his medal to a tailor and said "do your thing" and the tailor made a new bar using the old awards.
Schubert served until the end of WW1, so veeeery likely he had time to get his WW1 medals mounted.... can we seriously believed he ordered a new set of medals each time he needed another medal mounted? Officers were not exactly rolling in cash... they would have needed to be a real medal fetichist to do that.
I think it may be easier to explain why Kamecke is missing a DA, as opposed to why Schubert would order a really expensive bunchof medals when he had them on an old prewar bar.
Realistically, with a bar of peacetime thingies... he probably hit the tailors at light speed when he got his nice sparkling EK2?
Best
Chris