Bowl of tinned copper, shaped to resemble the upper section of a human skull, with separate cover and stand, used for making offerings to Buddhist deities: India, Ladakh, Hemis Monastery, Tibetan, 19th century AD

Bowl stand of tinned copper, with three grinning skulls between chased and pierced borders, for a skull-shaped bowl used for making offerings to Buddhist deities: India, Ladakh, Hemis Monastery, Tibetan, 19th century AD

Bowl cover of tinned copper, domed with flattened edge and dorje crest, for a skull-shaped bowl used for making offerings to Buddhist deities: India, Ladakh, Hemis Monastery, Tibetan, 19th century AD

Libation bowl of copper in form of the upper part of a miniature human skull, ordinary ritual: Tibet

Libation bowl cover of brass, domed and surmounted by a half dorje, ordinary ritual: Tibet

Bowl of turned brass, circular with concave sides, flared lip and shallow foot, used for making offerings: Tibet, late 19th century AD