"Cupid and Psyche" (1796), by Canova (Antonio Canova) (1757-1822), Marble Sculpture, Acquired by Prince Yusupov in Rome, now located in the Louvre, Paris, France
I was thinking about this the other day, the fact that we don't know Penny's last name.... Also, Leonard's middle name is "Leakey" after Louis Leakey of Lucy fame...