Iron Cross 1st Class 1914. Four Lug Pattern.

In a very good, barely worn condition. The core with all of the black paint. The ribbing in matt white silver, the flanges burnished and all with some patina.
Not marked but a known variation. Pattern with four lugs to sew on the uniform.
See Frank Wernitz, Das Eiserne Kreuz 1813 1870 1914, p.372. Three piece construction and magnetic.
A very difficult to find variant.