Lot Essay
According to Raven (p. 196 in D'Auria, Lacovara and Roehrig, Mummies & Magic, The Funerary Arts of Ancient Egypt), the decoration on canopic boxes "usually comprises the Four Sons of Horus, in conjunction with various symbols of Osiris (djed, head on a shrine) and Isis (tyet, uraeus, winged goddess). ...Since the Sons of Horus were associated with the viscera, this decoration strongly suggests that such objects served as canopic chests."
Furthermore, Taylor and Strudwick note (p. 82 in Mummies, Death and the Afterlife in Ancient Egypt), "Canopic containers of the Late and Ptolemaic Periods were often constructed and decorated in imitation of shrines. The intention was to convey divine status by association - as the principal function of a shrine was to house the physical embodiment of a god, so the shrine-shaped box implied that whatever lay inside possessed the attributes of divinity, including regenerative powers and everlastingness."
Furthermore, Taylor and Strudwick note (p. 82 in Mummies, Death and the Afterlife in Ancient Egypt), "Canopic containers of the Late and Ptolemaic Periods were often constructed and decorated in imitation of shrines. The intention was to convey divine status by association - as the principal function of a shrine was to house the physical embodiment of a god, so the shrine-shaped box implied that whatever lay inside possessed the attributes of divinity, including regenerative powers and everlastingness."