In addition to his many other achievements, he developed a lifelong passion for
horology and became the leading authority in his lifetime on the work of the famed Swiss-French watchmaker
Abraham-Louis Breguet, who is generally acknowledged as the greatest watchmaker of all time. In 1921 he self-published the first major work on Breguet's life and career, including a detailed review of Breguet's inventions, and a timeline of production, with illustrations of major timepieces from his own collection. Over the course of his lifetime Salomons amassed the world's largest private collection of Breguet watches and clocks, comprising 124 pieces, including the two watches considered to be the pinnacle of Breguet's art—the
"Marie Antoinette" (No. 160) and the "Duc de Praslin" (No. 92). In 1924 Salomons donated the "Duc de Praslin" to the
Musée des Arts et Métiers in Paris, but it was subsequently stolen. Fortunately, after three months of tinkering with the watch, the thief was apprehended and the watch recovered when he took it to a renowned Parisian watch specialist for repair. He left some of his collection to his wife and she later took them to Sotheby's to be auctioned, although on her first visit she was reportedly dismissed from the office because the Sotheby's staffer could not believe that anyone could possibly have owned such a collection. The timepieces were subsequently sold at auction for considerable sums. '', 1908 In 1980, British master horologist
George Daniels catalogued the Salomons collection and published a study on it. Three years later, on the night of 15 April 1983, the
Mayer Institute was burgled and 106 rare timepieces were stolen, including the entire Salomons collection. The multimillion-dollar theft was Israel's largest-ever robbery—by this time, the "Marie Antoinette" alone was valued at nearly US$20 million. The case remained unsolved until 2006 when a Tel Aviv watchmaker tipped off Israeli police that he had paid US$40,000 to an anonymous person to purchase 40 timepieces, including the missing "Marie Antoinette". Forensic experts examined the timepieces they recovered and detectives questioned the lawyer who negotiated the sale; their investigation led police to an Israeli woman living in Los Angeles, Nili Shamrat, whom they identified as the widow of
Naaman Diller, the notorious Israeli criminal who carried out the burglary and then fled to Europe, before settling in the United States. When Israeli police and American officials arrived at Shamrat's home to question her, they found more timepieces and 66 of the stolen Mayer Institute timepieces were eventually recovered. ==The
Hythe disaster==