A lot of Galatians settled in Thylis, so it would be a historical accurate chance to give them a second province. Making a new one in minor Asia would be good as well.
Here you find some Gaul money, one from Galatia is in there too. I would rather take pictures on the money as a flag..
http://images.google.de/imgres?imgur...3D105%26um%3D1
I checked some Galatians money, also in a book of mine and it seems like the Ox or the lion was shown on many of them. Maybe just use the Ox and or the lion as a symbol.
Bookmarks