Every once in a while I come across something that stands out as being rather different. Something rather odd.
Here is one of those things: in a detail from a Durer altar painting (All Saints' Picture, Landauer Altar, 1511) is a lady. She sits at the extreme right of the painting and wears an otherwise pretty typical example of late 15th C / early 16th C German clothing. However, her veil completely covers her face, revealing only her eyes.
That's the only example of full-face veiling I've seen in a Western European historical context. Please do enlighten me if you know of any other examples!