Coat of arms of the Marquis Valenti, painted by Carlo d’Arco.
In the I and IV gold to the double-headed eagle lowered in black crowned by the same; in the II and III in silver to the red lion (the two faced) on a blue campaign; on all gold with two blue poles.
Split: in the silver I to the rising lion of red; in the II gold with two blue poles.
On the main facade of the courtyard, there is the cartouche bearing the inscription Valentibus Apta.
In Rodolfo Signorini, Palazzo Valenti Gonzaga in Mantova, Mantua 1993, p. 9.