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CoSylDa Design was founded in 2001, and formally registered as CoSylDa Design LLC in 2006. CoSylDa Design, while primarily focusing on watch repair and custom creation, also encompasses other related activities, which will appear on the website as they evolve.

CoSylDa Design is a new consignment service for the Horologist (watch or clock maker, or serious time piece collector). Not limited to watchmakers, however, tool makers, machinists, engineers, gun smiths, knife makers, jewelers, robot enthusiast, and inventors will also find interesting items and tools of their trades here.

The spectrum of items consigned range from books, hand tools, and machinery, to highly specialized and rare vintage tools. There are no conventional stores that provide this extensive product range or exposure.

The President of CoSylDa Design, Ron Landberg, is a WOSTEP, Watchmakers of Switzerland training and educational program trained and certified Watchmaker. He accepts high end prestigious watches for repair and vintage watches in need of restoration. Please contact him directly via e-mail or phone to discuss your specific needs.



Ron Landberg is a WOSTEP trained and certified Watchmaker. WOSTEP is an independent and neutral institution that is recognized as an exemplary training centre in the field of watchmaking. WOSTEP is financed by its members who include leading Swiss watch brands, watchmaking organizations, other associated sectors and retailers in Switzerland and around the world.

He is also certified by the American Watchmakers - Clockmakers Institute, is a Graduate Member of the British Horological Institute, and is a member of the National Association of Watch and Clock Collectors.

Having worked in traditional sales and computer careers previously, Ron’s life experiences have led him to focus on customer service. He prides himself on being adept at interpreting customers’ preferences and consistently delivering quality and timely repair work.

Ron Landberg
2008 © CoSylDa Design LLC.• Design by Art Z design