WWI German Iron Cross 1st Class, Screw Back- This vaulted, screw back private purchase example is very handsome! The silver frame and backing are only lightly toned. The core finish remains 90% intact. The large, round screw back plate is produced in zinc with a plated finish. This interesting example has a twin stud screw back set up. The nuts are brass. The reverse is stamped with the silver content of 800. Great condition!