Violins, violas and violoncellos made by the great Italian makers, such as Antonio Stradivari or Guarneri del Gesù, are an incredible, sustainable investment with impact. With our international network of violin makers, restorers, violin dealers, independent experts such as lawyers and surveyors, specialists in museums, galleries, universities and research institutions, we turn investors into patrons. 


The focus of ZUSI AG  is on advising family offices, HNWI, foundations and collectors in high quality historical stringed instruments as an asset class. By offering an above standard of transparency, we provide the investor with all information on this specific market and the objects. For its investors and partners ZUSI AG is developing tailor made strategies.


Our services include:

  • Consulting on acquisitions, private sales & auctions
  • Building portfolios & collections
  • Support for certificates, historical research, condition reports, CT-scans, dendrochronological research, varnish analysis and other scientific methods
  • Presentations and talks about topics such as "Stringed Instruments as an Investments" or "Mythos Stradivari" 


Together with our partners we welcome you to the fantastic world of violins.



The Karl August Collection


Karl August started collecting instruments in the 1950`s. Over the last 70 years, the collection was enlarged with further instruments of great quality. Now, it is time for the instruments to find their way back to great musicians.  



We are happy to present you some of our instruments in stock, please get in touch for access to the dataset.


The Jost Thöne Verlag, est. in 1998, is the biggest publishing house in its industry. With the 8 volumes of "Antonio Stradivari", the monograph on the Stradivari Cello "Barjansky" and other publications, the company is represented in many violin shops, museums & collectors homes.  Experts worldwide use these books on a daily basis. ZUSI AG and the Jost Thöne Verlag are collaborating in knowledge exchange, offer joint presentations and on request by owners, the publishing house is offering to produce a monograph on your Stradivari, coordinated by ZUSI AG. 

Stradivari Art


Whether you are a Stradivari enthusiast or interested in fine art - you will find unique, detailed pieces. All products are strictly limited and made by international artists.

Inspired by the incredible work of Antonio Stradivari, you will find sculptures, jewelry, books, prints and more.