Under her married name (as Josette Day Solvay, Josette Day-Solvay, or Madame Maurice Solvay), she owned several ancient collections valued for several thousands of dollars that have been displayed and sold to exhibits and auctions. Some such pieces include, the "Bound Captive" stone statue depicting a male torso with hands bound behind his back; it is believed to be second century A.D. made either during the classical or Egyptian periods and valued at £350,000 as reported in Isuu magazine (2009). Books of her ancient art and furniture collections have been published from 2000-2003 in French.
