With the factory mark in grey enclosing the date letter x for 1775 adjacent to the painter’s mark of 9 for Charles-Nicolas Buteux (active at Sèvres 1763-1801). Four blue dots in a line for gilding by Pierre-Théodore Buteux (known as ‘Théodore’ active at Sèvres 1765-80). With the gilded mark # for the gilder Michel-Barnabé Chauvaux (active at Vincennes and Sèvres 1752-88). Incised NO