Iron Cross 1st Class 1914 on Screwback. Type AWES, Waffel, non magnetic

In a very good, slightly worn condition. The core with practically all of the black paint still present, the frames with patina.
Not marked but a known variation that has been attributed to the company of Anton Werner & Söhne, Berlin (AWES-Münze). The reverse with the typical „Waffel“ pattern. Three piece construction and non magnetic.
Very difficult to find variant with large plate and screw.