To throw this into the pot, on the open source
LEMB Sktz Database we have this entry:
GN+HY - Fieseler Fi156C-3 - WNr.1203 - coded Q9+HY of 6./Fl.G.zbV 7 (Waffen SS)
I do note however that Peter van Gogh doesn't have a source against either WNr block (GN+?? or NS+??) so I'll ask him from where he obtained this data especially as neither matches Remi's data...
Cheers
Peter D Evans
LEMB Administrator