Steve, I haven' seen the Prop device your talking about all I have seen is the O/R shoulder titles. You might try Terry Webb <[email protected]>. He collects such stuff. For shoulder titles try Co.of
Eagles or Great War Militaria. Also British Collectibles at 310-453-3322 in Ca. but they have a $50 min. But 2 pair of shoulder titles would cost that.
Lt. Dwight Rudder, RFC