Notitia Dignitatum

[markusaurelius]

http://www.pvv.ntnu.no/~halsteis/notitia.htm

http://www.ne.jp/asahi/luke/ueda-sarson/...right.html

I'm assuming you've gone through these sites? Especially the second link. There are lots of good images of the shield patterns

http://www.ne.jp/asahi/luke/ueda-sarson/...iarum.html For Valentinianenses Iuniores

and

http://www.ne.jp/asahi/luke/ueda-sarson/...ricum.html for Valentinianenses Felices

You can certainly zoom in enough to see what the shields are all about.