It is an early example of the house-shaped shrine that became popular across Europe later in the Middle Ages, perhaps influenced by Insular styles.
[3] Past scholars suggested that Monymusk Reliquary was the Brecbennach of St. Columba (modern Gaelic Breac Bannoch or "embossed peaked-thing"), a sacred battle ensign of the Scottish army, used for saintly assistance, and mentioned in various charters associated with Arbroath Abbey.
The silver plates on the front and lid of the casket are decorated with beasts leaping and twisting, and biting at their tails on a spotted field, characteristic of animal style in Celtic art.
[4] The Brecbennoch may have been handed to the abbot of Arbroath Abbey during the reign of William I (r. 1165 - 1214), who in turn passed it to someone else's care at Forglen.
It stayed in the Grant collection until 1933, when it was due to be auctioned, but was acquired by the National Museum of Scotland first, with the help of the Art Fund.