India became an independent country at midnight on 14/15th August 1947. However, India remained a dominion within the Britishicon Empire until 25 January 1950, when it became a republic. King George VI therefore remained head of state and King-Emperor of India between 15 Aug 47 and 25 Jan 50.

Hence any Ishapore built up until midnight on the 25th January 1950 would still be a "GRI" with the Royal cipher. No idea what happened to receivers that were still parts at that time - presumably some "GRIs" were finally built during the republic...
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