Hauptmann Wilhelm Moritz, Stkp. 12/JG51 when?

[Andy F-P]

Hello,
I have recently acquired some paperwork to a groundcrewman/technical officer in 12/JG51. One item is a citation for the Eastern Front medal signed by Wilhelm Moritz on 20th August 1942 as Staffelkapitaen of 12/JG51. Please see the scan.

Every reference to Moritz becoming Staffelkapitaen of 12/JG51, including Aders and Held has him leading the Staffel from October 1942. I am sure this is Moritz's signature as it is strikingly similiar to a copy of his post war signature that I have.

Does this mean that Moritz was appointment Staffelkapitaen in August 1942 rather than October 1942 or am I barking up the wrong tree?

Any thoughts gratefully received.
Regards,
Andy