Going through my late dad's stuff, found his WW2 tunic, I know the Buffs collar badges and buttons, and the pips, Sam Browne etc. But what is the 10" long khaki strip (lined), red edge piping on one half, a button hole at each end? And the badge on it, a facing eagle, coronet between wing tips, and a red sword/dagger device on the eagle's front? He served in RTR until 1944 then posted to Buffs. Grateful for any information.