Mum`s number was 6439. which resulted in many happy Christmases. The TV was `Defiant` (the Co-op Brand). I even had a Co-op bike one Christmas, which had all the appearance of a Raleigh but was badged and painted Co-op. Even the Mangle, used every Monday morning, had Co-op worked into the wrought iron hand wheel which operated it. All paid for with Co-op `Divi`.
The Co-op once had a museum in the Dartford area where the Mangle was renovated and exhibited. Likewise a contraption, found in the roof-space of a former Co-op building, which turned out to be a raisin stoner.