Thanks Ian and Larry,
and in additional Larry is right so far.
"5fl.A.St.d.Lw 12/13"
correct typing is
"Sfl.A.St.d.Lw 12/13"
(Segelflieger-Ausbiildungsstelle der Luftwaffe 12/13)
Gelnhausen Airfield is kind of specific corner for my researches since years. Propably i am waisting most of my retiring time in the future to come.
No Guts - No Glory
Cheers
Norbert