KS (Kronen & Sohne) watch first impression - YouTube
Kronen and Söhne Automatic Watch - YouTube
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Kronen & Sohne - wristwatch - Catawiki
Sold at Auction: Kronen & Söhne Navigator Gents Automatic Wristwatch - as new unused in original box with instructions, etc., silver dial with moon face movement and visible flywheel, black leather strap,