Hi D.J.
I can't answer your question but the one you show is the same as mine on page 1. All Dragoons were given one and it stands to reason that some or all the Old Guard got them. Glad-handed out by the bosses too, no doubt. A gift from the Guild of the RCD. I certainly don't recall anyone ever challenging anyone with it. When I served there was only one coin for that.
Can't say what year on that RCD one either. Maybe 1989. Maybe 1992.
regards
Darrell