H A 1,900-year-old Roman ring found buried in a field near Alconbury has been declared treasure. Simon Ashford from Godmanchester was scanning a field with a metal detector on March 20 last year when the machine located the silver ring three inches below the surface. After Mr Ashford declared his find, it was sent to the British Museum, where Ralph Jackson of the department of European pre-history confirmed the jewellery was of Roman origin. He said the finger ring, which had a plain hoop and flattened shoulders, probably dated back to the first or second century. Cambridgeshire deputy coroner Dr Sam Bass declared at a hearing in Huntingdon on Wednesday that the ring qualified as treasure. St Neots Museum had been offered the item but was unlikely accept it, said a museum spokesman, meaning that the ring could revert to Mr Ashford.