Not a Cloth or Bag Seal, Document Seal, Hamburg

Not a Cloth or Bag Seal, Document Seal, Hamburg, Image & Held by Jose de Sousa.
Found in Abrantes, Portugal, 40mm, 39g.

Castle // double-headed eagle, DA PACEM DOMINE around

Thought to be a document seal but there are similarities with the structure of the German, Merchant's Type Seals.