A signature from a Hptm. in JG 51?

[cbe2009]

Hello,
I recently had the luck of getting some photos and letters belonging to Ln. Klaus-Henning Kamrath from 12./JG 51. He went missing on August 23, 1942 in area around Rzhev in Russia. (Me 109 F-2, Wnr. 5447, Brown 3)
There were two letters to his wife, one from Ofw. Heinrich Klöpper (RK) and then this one attached from a Hptm. Müller.
I have looked everywhere but cannot find this name, either in the books on JG 51 or anywhere else.
Does anyone know who this Müller is?

Thank you in advance,

Christian

[Gaston]

Hptm. A. Müller is probably the JG 51 informant.
At that time he was commander of 12./JG 51, Oblt. Egon Falkensamer.
It may be deputy commander, but probably not.

[cbe2009]

Thank you Gaston, much appreciated!!

Cheers,

Christian