I've run across an illumination in Manuscript Miniatures that is very intriguing. The attached image of the knight on the right shows what appears to be either a padded gambeson, or a very early splinted vambrace. The work itself is a Gospel lectionary from 1275-1300. The rest of the images in the lectionary (presumably by the same artist) show gambeson (with mittens) as bright colors (yellow and red to my eye). It appears that all of the illustrations who have mail have full sleeves and mittens
of mail (minus a few of the aforementioned gambesons) and one illumination features full sleeves with bare hands. In summary, nothing else within the illuminations approximate that forearm...and what appear to be gambesons with mittens are depicted in different colors. You can see the attached picture in question, and follow the link below to the rest of the manuscripts - 19 in total, most without mail. I have some of my own thoughts and interpretation on this, but would love to hear what others think.
http://manuscriptminiatures.com/search/?manuscript=5803

