Here's an interesting snippet of information from Austin Ruddy:
"Another ebay fake? It certainly looks like it: crudely-marked 'ARP' on the outside flap but stamped '1952' inside the bag. However, there is more to this than meets the eye...
I saw one of these at London's Portobello Road market in 1990 and couldn't work it out. It puzzled me for years until I was told the answer.
Very occasionally, the post-war Civil Defence Corps still used the term 'ARP', so is this a piece of 1950s CDC kit?
No, but the clue is in the 1952 stamp. This is indeed a genuine WW2 ARP first aid bag - there should be a 1940 stamp somewhere inside it - but it was reissued in 1952 to His Majesty's Prison staff, hence the accompanying 'HMP' stamp.
They must have had a surplus glut of these ARP first aid bags and didn't want to send them for ragging."
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