As footnote, I searched getty for some images. Getty gives 01 Jan 1905 as "Date created" for the first image below. 1905 cannot be relied on as the year because of the Cullinans. Also, getty use "01 Jan" when they cannot be more precise with a date.
The two images could still be from the one occasion. My research is continuing.
Here are the getty images for "1905" [match with Kat Max} and "1910" [match with mine in the centre of the three] -
King Edward VII (1841 - 1910) and Queen Alexandra in state robes at the state opening of Parliament. (Photo by W & D Downey/Getty Images) [Date created 01 Jan 1905]
1910: Queen Alexandra, (1844 - 1925), queen-consort of British monarch Edward VII, (1841 - 1910), at the State Opening of Parliament, wearing the Colinan I & II diamonds, in what proved to be the last year of her reign. (Photo by Hulton Archive/Getty Images) [Date created 01 Jan 1910]