Excellent studio portrait photo with Oak Leave as an Oberst as well as 11 larger size period time photographs. 

Several period time newspaper articles. Many pasted on modern paper. Several about about Koetz's Oak Leaves awarding. 

A 7.2.44 dated letter of congratulations to his Oak Leaf signed by "Ihr Hartmann". (Walter Hartmann?)

A period time watercolor.

A "Durchgangsschreiben" without a date of the commanding general of IX. Armeekorps General der Infanterie Rolf Wuthmann. He congratulates to a "Auszeichnung" which must again be the Oak Leaves. The original envelope is also still there.

A period time telegram congratulating to the Oak Leaves by Generaloberst Reinhardt.

Original letter of congratulations dated 24.1.1944 to the Oak Leaves by the leader of Kampfgruppe 87. I.D.

Several very interesting period time as well as postwar documents allowing a lot of room for additional research. Photos of his grave.