id of dip'corps men- need help plz.

[Regen]

Hello Gentlemen.
I ask for your help in identification of this person on a photo.
Thanks for your Attention to my thread
Cheers, Re.

[der-hase-fee]

Hard to decipher handwriting.

"In dankbarer
guter Erinnerung
an ..."

I think to make out the signature to be "v. (von) Klemm".