(Kriegsabzeichen für Minensuch-, U-Boot-Jagd- und Sicherungsverbände). Constructed of gilded and silvered tombak, the obverse consisting of an oval oak leaf wreath, joined together at the bottom by ribbon, topped by a Kriegsmarine eagle clutching a mobile swastika, around a central depiction of an exploding sea mine, the reverse with a block hinge and banjo-style pinback meeting a flat wire catch, designer marked “OTTO PLACZEK, BERLIN” and maker marked “SCHWERIN, BERLIN”, measuring 43.68 mm (w) x 53.97 mm (h), weighing 29.8 grams, in extremely fine condition.