Copper-alloy, 110 grams, 70.86 mm. Circa 3,000-1,500 BC. Of flat cast form with raised flanges to each side and a curved cutting edge. Reference: John Evans The Ancient Bronze Weapons & Ornaments of Great Britain & Ireland, London, 1881, page 52. Provenance: found in County Durham. A good example of this early type, with the edge well worn from heavy use.