Paul,
I got them with a pair of Oberingenieur tabs, which led me to believe they were an Oberingenieur d.R. set, but in my opinion, the blue was not quite right for reserves. After reexamining the change order, I now believe the set to an Obernautiker set from after Order LV41 No. 1562 8 Oct, 1941, which also mentions the collar tabs changed from props on dark green to the ingenieur type of props on pink.
Do you agree?
Bill