Antique German 800 silver enamel 5 nation country flags charms bar pin brooch

Great condition, shows some tarnishing. This incredible and rare bar pin features five enameled nation's flag charms including The Netherlands, Britain (Red Ensign Maritime), Belgium, France, and the United States. Bar is stamped “800” indicating silver purity and pin is stamped “metall,” indicating German craftsmanship. Likely a commemorative or souvenir piece from the early 20th century, there is a bail for a 6th flag to hang though I don't know if it's missing or was simply never mounted. Clasp functions perfectly. Please see photos for measurements in inches. Unisex.