As there seems to be enough interest in these unusual flags here is the first batch; two flags from the early part of the century but of patterns that were probably carried much later. The upper flag is of an unknown unit and of the general windmill design of Portuguese flags. The lower one belonged to the Armada Tercio early in the century. Note the anchors round the central heraldic device.
What little we know of Portuguese infantry flags of the 18th century is covered in this post on the Kronoskaf site: http://www.kronoskaf.com/syw/index.php?title=Portuguese_Line_Infantry_Colours
I shall gradually post the rest of the Portuguese flags I have created.