The antique trade was undertaken by Foresto Riccardo Mazzoni at the end of the 19th century. The business, of the renowned "Casa d'Antica Arte senese", was continued in the following century by the founder's son, Giuseppe, who, along with his sister Anita, brought the activity in the 1920s to a level of considerable importance, both for the quality of the objects traded and for the commercial relations established with scholars, collectors, and restorers and Sienese artists, such as Icilio Federico Joni. Following the economic crisis of 1929, Giuseppe gradually withdrew from the trade. The activity was resumed in the post-war period by Giuseppe's son, Riccardo Foresto, who reopened a shop in via del Paradiso in the 1960s and then moved it in 1970 to Piazza San Giovanni, in the premises below the sacristy of the Duomo where the shop still stands today.