Portable altar in the form of an ebonised triptych with silver reliefs of the Annunciation, St Michael overcoming the Devil and the Martyrdom of St Sebastian: German, Augsburg, by Jakob Anthoni, 1608 - 1615

Bronze charm in form of a triptych: Russian

Triptych of enamel and copper with an angel standing above a sleeping figure on central panel, and wings showing offerings being made before altars: Scottish, Edinburgh, by Phoebe Traquair, 1903

Triptych of enamel and silver depicting Cupid the Earth Upholder, and side panels with figures holding curtains: Scottish, Edinburgh, attributed to Phoebe Traquair, c.1905-1907

Ivory panel carved with a scene of the Crucifixion under a Gothic arch, originally the central leaf of a triptych: French, 14th century

Triptych of carved and tinted ivory depicting the Coronation of Charles VII in Rheims Cathedral in 1429: French, probably Dieppe, mid-19th century

Centre of a triptych of carved ivory with a Crucifixion scene with mourners under a Gothic canopy, in a black wood frame: French, 14th century

Ivory triptych elaborately carved and delicately tinted in red, blue and gold with a coronation scene showing a French king and queen, probably Charles VII or his son, Louis XI: French, probably Dieppe, mid-19th century

Colour woodblock triptych print, entitled Oikawa no zu (Picture of Oi River), depicting porters carrying women across the river on portable platforms: Japan, by Utagawa Kuniaki, 1859

Sheet from colour woodblock print triptych, entitled Furyu shobai yuran no zu (Fashionable Plum Blossom Viewing) depicting Genji, ladies and attendants on an excursion to view plum-blossom: by Utagawa Kunisada, Edo, Japan, 1853

Sheet from colour woodblock print triptych, entitled Furyu shobai yuran no zu (Fashionable Plum Blossom Viewing) depicting Genji, ladies and attendants on an excursion to view plum-blossom: by Utagawa Kunisada, Edo, Japan, 1853

Sheet from colour woodblock print triptych, entitled Furyu shobai yuran no zu (Fashionable Plum Blossom Viewing) depicting Genji, ladies and attendants on an excursion to view plum-blossom: by Utagawa Kunisada, Edo, Japan, 1853

Sheet from colour woodblock print triptych, entitled Konrei no zu (Marriage Picture), depicting bride being led forward from her palanquin: by Utagawa Kuniyoshi, Edo, Japan, c. 1850

Sheet from colour woodblock print triptych, entitled Konrei no zu (Marriage Picture), depicting bride being led forward from her palanquin: by Utagawa Kuniyoshi, Edo, Japan, c. 1850

Sheet from colour woodblock print triptych, entitled Konrei no zu (Marriage Picture), depicting bride being led forward from her palanquin: by Utagawa Kuniyoshi, Edo, Japan, c. 1850

Sheet from colour woodblock print triptych, entitled Gappitsu Genji teichu no yuki (Collaborative Genji: Snow in the Garden), depicting Genji looking at ladies beside a miniature Fuji in a snow-covered garden: by Utagawa Kunisada and Utagawa Hiroshige, Edo, Japan, 1859