An envelope that once contained two letters: one by Pietro Metastasio, and another by Voltaire, to Gasparo Angiolini. The envelope is now missing its contents.
There are some small dots of ink beneath the inscription. The envelope has a vertical fold line on the right-hand side, suggesting that the letters it contained were approximately 123 x 208 mm. The edges of the top flap have been slightly damaged, and the top flap is embossed with a shield.