Cloth Seal, Arms

Cloth Seal, Arms, Image & Found by ExpIInut.
Found on East coast of Lincolnshire, 35mm.

Ornate shield bearing top of a cross with indistinct design beneath (horse?), over-stamped with letters B and S separately // missing

One disc from a double riveted cloth seal probably bearing a coat of arms (unidentified). Most likely sixteenth century. Continental?