Unusual Double Area Marking On Warden Battledress

This ARP Pattern 57 battledress jacket and warrant card cropped up on eBay recently (with a price of £160). It's the first time I have seen a double area marking - one for the county of Staffordshire and one for the local area of Rowley Regis (southeast of Dudley). Very unusual to see the Rowley Regis badge sewn to the upper flap of the breast pocket. The CD breast badge appears to be the merrow edge variety that was attached to the jacket when made. The rank stripes don't appear to be the usual WW2 variety and look a bit like those that the Civil Defence Corps issued from 1948. Again, they may be original but hard to say. Oddly the lanyard is white - I would have again expected it to be yellow for Staffordshire. It appears that a metal Police type chain in connecting the whistle to the lanyard. The jacket also features four war service chevrons.