Tombak/brass based and in an excellent, probably unworn condition. The wreath with all of the matt gilt plate still present. The explosion with all of the silver plate and some slight patina.
Not marked but a known variation that has been attributed to the company of Wilhelm Deumer, Lüdenscheid. See GCA database.
Uncommon variant.

Tombak/brass based and in a very good, barely worn condition. The wreath with practically all of the gilt plate. The explosion with all of the silver plate and some patina. The waves dark oxidised.
Not marked but a known variation that has been attributed to the company of Wilhelm Deumer from Lüdenscheid. See Weber/Skora, The War Badges of the Kriegsmarine.
Difficult to find maker.

Tombak / brass based and in a very good, slightly worn condition. The wreath with lots of the gilt plate. The explosion with all of the silver plate and some patina. The waves dark oxidised.
Not marked but a known variation that can be attributed to the company of Wilhelm Deumer from Lüdenscheid (L/11).
Seldom seen variant.