A. Lünser was a prestigious Berlin-based jeweler and watch retailer active in the early to mid-20th century, known for offering high-end timepieces and collaborating with some of Europe’s finest watchmakers. Most notably, Lünser retailed Patek Philippe watches, occasionally with co-signed dials. Operating in a city known for its cultural and intellectual vibrancy, Lünser catered to a discerning clientele, bridging Swiss horological excellence with German refinement. Though the name has faded from mainstream memory, surviving pieces bearing the A. Lünser, Berlin signature are quiet witnesses to a lost era of continental elegance and bespoke craftsmanship. The Breitling single pusher chronograph above features a beautiful and perfectly preserved black gilt dial with A. Lünser co-signing and a well preserved steel case.