SA Unit Identification?

[DocumentsGuy]

Recently picked up a student identification card for the Higher Technical State Institute for Structural and Civil Engineering in Idstein/Taunus. Great photo of the student in SA uniform but what SA unit does he belong to? I've not been able to find an 11/253.
Thanks

[laurens]

Standarte 253 was from SA-Gruppe Hessen. Führer was Standartenführer Ludwig Zimmermann. Idstein is in Hessen as well. 253 was an early Standarte as after 1935 I found no traces of it.