Ergänzungs-Zerstörergruppe

[Komet163]

Gentlemen,

I'm trying to identify two signatures on a document that I acquired last year. The document appears to be a performance report leading to a promotion for Herbert Schob who won the RK.

The document has three signatures. First is a Leutnant and Staffelführer 1./Erg.Zerstörergruppe, looks like Lütter

second is signed by an Oberleutnant und stv. Gruppenkommandeur.

Gruppenkommandeure:
Hptm Adolf Edler von Graeve, 10.4.40 - 9.40
Obstlt Friedrich Vollbracht, 28.9.40 - 3.7.41
Maj Wilhelm Lessmann, 4.7.41 - 15.9.41
Unknown, 18.4.42 - 3.43
Hptm Peter Habicht, 17.9.43 - 11.1.44

The document is dated 19.2.43

Any thoughts ??

Thanks in advance!