Porcelain painter: Jean Georget.
After a statue from the Hall of the Muses in the Museo Pio-Clementino, Vatican.

In Greek mythology, Thalia is the name of a muse associated with comedy and one of the Three Graces.
Usually portrayed as a young woman with a joyous air, crowned with ivy, holding a comic mask in her hand. Many of her statues also hold a bugle and a trumpet, or occasionally a shepherd’s staff or a wreath of ivy.