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In response Robert Wakefield to his Publication

Interesting photo. I could not find an exact copy in any collections. Looks like it was taken in 1953, at Buckingham Palace, by Baron Sterling Henry Nahum. This was the closest I could find.
https://www.rct.uk/collection/2081177/hm-queen-elizabeth-ii

In response Soul Shine to her Publication

Found another even closer, although colorized, with the right earring out of focus.
https://www.npg.org.uk/collections/search/portrait/mw203723/Queen-Elizabeth-II?LinkID=mp01454&wPage=2&role=sit&rNo=58

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