Ah, ah, no lucky dog yet, Captain
.
Indeed there was a pair of them. This local fellow collector spotted both; bought one for himself and reserved the other one, thinking of me. I hope the seller still has it when he goes there to fetch it.
They don't have to be Portuguese or Spanish. France and England are not so distant. But according to the seller they belonged to a Portuguese Navy officer; he might have brought them from his unit's wall decoration or the like ... something not so uncommon.
Let me have it in my hand; will take better pictures and maybe we can develop further.