The Corieltauvi occupied a broad territory across what is now Lincolnshire, Leicestershire, and Nottinghamshire, and their coinage is distinctive among British Iron Age issues for bearing paired names — likely joint rulers or a ruler and a subordinate — rather than the single names found on most contemporary British struck silver. "Aun Cost" is one such pairing, though the precise political relationship between the two named individuals remains unresolved. These coins were struck in the decades immediately preceding the Claudian invasion of 43 AD, when tribal minting in Britain was approaching its abrupt end.
The Corieltauvi occupied a broad territory across what is now Lincolnshire, Leicestershire, and Nottinghamshire, and their coinage is distinctive among British Iron Age issues for bearing paired names — likely joint rulers or a ruler and a subordinate — rather than the single names found on most contemporary British struck silver. "Aun Cost" is one such pairing, though the precise political relationship between the two named individuals remains unresolved. These coins were struck in the decades immediately preceding the Claudian invasion of 43 AD, when tribal minting in Britain was approaching its abrupt end.