Two signed autographed letters, one addressed to Major General Giacomo Durando in Turin, 1 April 1850, on intact paper of the General Command of the Military Division of Genoa, the second dated Turin 25 May 1850.

** In the first letter, Count Trecchi is recommended for a delicate task; in the second the criteria for the awarding of medals for military valor are defined and discussed, especially in relation to whether or not they should be granted to soldiers of the Savoy army.Declaration of cultural interest has been started by the Soprintendenza Archivistica e bibliografica del Lazio