Auxiliary Cruiser war badge. Maker L/21. Published (!).

Zink based and in a very good, probably unworn condition. The wreath with practically all of the gilt plate still present. The globe with all of the silver plate and some patina.
Marked on the pin with „L/21“ for the company of Förster & Barth, Pforzheim. See GCA database. .
Exactly this badge shown in the book by Weber/Skora, The War Badges of the Kriegsmarine, on pages 462/463 also In Williamson, War Badges of the Kriegsmarine on page 159 and in the GCA database.
One of the only few known existing examples. Rare chance to add a, in several books published, reference badge to the collection (!).