Die of seal in bronze engraved with the shield of the Barberini family, inscriptions on the orle CAROLVS . MARIA . PRINCEPS . BALI . BARBERINI . DVX . MONT . LIBRETTI, coat of arms azure with three bees or, ensigned by a tiara and petrine keys, surmounted by a ducal crown supported by two putti Italy, late 18th century D: 5.3 cm (small accidents and scratches) Provenance: Former collection of the Count of R, Eve sale, Paris, Drouot of June 24, 2015, lot 151 Carlo Maria Barberini-Colonna di Sciarra (1738-1819) was duke of Montelibretti and prince of Palestrina. He died in Florence in 1819.