Small penannular brooch of silver, from Waulkmill, Tarland, Aberdeenshire

Bronze penannular brooch, zoomorphic, found on foreshore at Rhodes Links, near North Berwick, East Lothian

Brooch of gilt bronze, penannular with interlaced ornament, from Mull, 700 - 800 AD

Portion of a silver pennanular brooch, ornamented with gold filigree work and amber settings, from Achavrole, Dunbeath, Caithness, 8th century

Penannular silver brooch with expanded ends and amber settings, surrounded by double rope-like mouldings, from Croy, Inverness-shire, 800 - 900 AD

Portion of silver brooch with gold filigree and red glass cloisonné settings, from Croy, Inverness-shire, 800 - 900 AD

Half of a penannular silver brooch with the expanded end ornamented with triquetras, from Croy, Inverness-shire, 800 - 900 AD

Incomplete silver penannular brooch, pin missing, with plain terminals and twisted hoop, now broken into two pieces joined by a repair sleeve, from Norrie's Law, Fife, 500 - 700 AD

Bronze penannular brooch found at Gogar Burn, Midlothian, 850 - 975 AD

Silver penannular brooch with spiral and zoomorphic decoration, Pictish, from near Clunie Castle, Dunkeld, Perthshire, 8th or 9th century

Silver penannular brooch, set with gold filigree, with spiral and zoomorphic decoration, Pictish, from near Clunie Castle, Dunkeld, Perthshire, 8th or 9th century

Penannular bronze brooch from Carn a Bhorich, Oronsay, Argyll

Penannular brooch with pin, from Machrins, Colonsay, Argyll

Penannular brooch of silver-gilt with panels of interlace, Pictish, from St Ninian's Isle, 8th century

Penannular brooch of silver-gilt with glass insets and interlace patterns, Pictish, from St Ninian's Isle, 8th century

Penannular brooch of silver-gilt with birds' heads and a blue glass inset, Pictish, from St Ninian's Isle, 8th century