5th or 6th c.
Anglo-Saxon. The shield boss of Dickinson type 1.1. The grip terminating at each end with volutes. One terminal lost. Heavily oxidized. Ground find, but a rare early piece. See Dickinson , Harke Early Anglo-Saxon Shields in Archaeologia Vol 110 for 1962 - pp.10-13 and 24-27, figure 7, 16 and 17 for comparable examples. From the collection of Anthony De Reuck.
If you have any questions, please send them to Wade Allen