A relic of the Anglo Saxon invasion: a supporting arm brooch, or stützarmfibel. This was one of the first uniquely Germanic brooch patterns, originating in northwestern Germany; Lower Saxony. They also turn up in southern England, where the Saxons first landed. This one is of the Mahndorf type, and was found in Winchester, 5th Century. Would have come to England with one of the first waves of Germanic invaders.