Cloth Seal, Salisbury?

Cloth Seal, Salisbury?, Image & Found by Andy Frape.
Found near to Ledbury, Herefordshire, 20mm.

Double-headed eagle, ...S.PRO... around // blank, split rivet stub

Salisbury is the only city in England with a double-headed eagle in its arms. There are many on the Continent and Amsterdam often has bow-necked examples on its cloth seals similar to this.

For a four-disc example of the Salisbury seal see p.138, Elton, 1917, Cloth Seals; An Illustrated Guide to the Identification of Lead Seals Attached to Cloth: from the British Perspective, Archaeopress.