Via the Bulletin of the New York C.S. Lewis Society, Sept.-Oct., 2021:

News from finebooksmagazine.com website dated June 9, 2021:

Leyburn, North Yorkshire, England — A highly important collection of C.S. Lewis titles from the library of the author’s lifelong friend Cecil Harwood (1898-1975) is to be offered in Tennants Auctioneers’ Books, Maps & Manuscripts sale on 28 July 2021. […]

Leading the collection is C. S. Lewis’s personal annotated copy of Snorri Sturlason’s Heimskringla (Cambridge, 1932), a hugely evocative literary artefact shedding light on his mature engagement with the Norse sagas which had first stimulated his ‘imaginative Renaissance’ as a young schoolboy (estimate: £700-1,000 plus buyer’s premium).

I can’t find any information as to who got the book.