You sure the A in the badge didn't mean Ancient??
...I'll get me coat....
Yes, I was told a lot of them were from long defunct units, 3rd Irregular Shirkers, 17th/32nd Combined Barrage Balloon Winchmen, etc.
Just checked: I have a couple of the MoD spec sheets for stable belts - they are not too out of date: mid-late 90's.
The data is a bitat times: like in identifying the different belt colours, they give a written description rather than a line drawing or colour photo. Typical for Whitehall...