Hmmm interesting ....
The RBG Sashes that were offered as a 2008 Spring Cleanup reward for 30k points came with the title of "Royal Britannia Guard", plus there was one color per virtue/town and they were blessed ... 
http://update.uo.com/design_590.html
The ones handed out by the previous EM program were inscribed with "Member of the Royal Britannian Guard" and on Sonoma they were the shard color of Blood Red reward cloth .. However, the first batch of those that were handed out were not blessed but that was caught before the second hand out by EM Masara - Commander Jade Hushenhoy (Guard leader) and had the blessed component added.
Yours has a different spelling - 'Britannian'? If so, do you remember the situation that it was acquired?
