On December 16th, at the Artcurial auction in Paris, France, a violin made by Bartolomeo Giuseppe Guarneri was sold for 2.31480 million euros (including commission), which met market expectations. Gua Shi's piano works are renowned for their powerful, emotionally rich, and highly resonant sound, which is loved by musicians and collectors. The sound quality is full of dramatic tension, which contrasts sharply with the classic balanced style of Stradivarus instruments. This piano was made between 1727 and 1730, during the golden age of the piano making industry in Cremona, Italy. At present, only about 150 works are known to have been personally signed by the makers. This qin has a back length of 353 millimeters, an upper width of 165 millimeters, and a lower width of 202 millimeters, and a head dating back to around 1710. The authenticity of the violin has been certified by multiple experts and obtained multiple certifications between 2020 and 2023. In 2025, the violin was analyzed by the age of the tree ring and found to be from the selfish collector Philippe Dennery. This violin has a clear inheritance and is very attractive for investment, collection, and personal use.

The former owner of the violin has a lot of background.

Philippe Dennery was born in 1933 and is a French citizen. His father was a member of the Free French Army; Due to the war, Dennery grew up in the United States. He graduated from Massachusetts Institute of Technology (MIT) in 1954 and obtained a PhD in theoretical physics from Columbia University in 1958. In the late 1960s, he first worked as a research physicist at the University of Pennsylvania, and then joined the European Organization for Nuclear Research (CERN) in Geneva, becoming the first French scientist to exchange ideas with physicists at the Moscow National Academy of Sciences.