But as there are no surviving coins , it seems that the mint was not in operation for long .
In the last year of Stephen 's reign , in mid-1154 , Chesney acquired the right to operate a mint in the town of Newark , granted in perpetuity .
As there are no surviving coins , it seems that the mint was not in operation for long .
In the last year of Stephen 's reign , in mid-1154 , Chesney acquired the right to operate a mint in the town of Newark , granted in perpetuity .