Coat of arms of Portugal under the alfonsine dynasty (1248-1385). Circular shape from the alfonsine lesser-seals. Source : 
File:Seals of the royal house of Portugal 05.jpg (Item XXII - Dinis I)
File:Seals of the royal house of Portugal 08.jpg (Items XXX, XXXIII and XXXVI - respectively Afonso IV, Peter I and Ferdinand I)
Own work
Katepanomegas