This is a Rockwell 30R repackaged for the British department store chain 'House of Fraser'. Still manufactured at the Portsmouth factory, it sports a navy blue (appropriately) case, but is the same design as for the U.S./Mexico manufactured Sears 8M which comes in black, presumably to the respective store's specifications. This calculator has its A5502CA I.C. labelled 7535 (1975 week 35). The manual for this calculator has been uploaded to the manuals page. Try it out---it works!
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