Wound badge in black by Foerster & Barth, Pforzheim. Steel construction with soldered on set up. Maker marked on the reverse with the LDO code of F&B "L/21" above the catch. The badge remains in excellent condition with all glossy black paint intact. The award comes in its original blue LDO case of issue with LDO logo on the inside. 
A very rare set of particular interest to collectors.