I’ve had a couple people reach out to alert me to this news: Roald Dahl’s original sketches to be auctioned. These are drawings that Dahl himself made prior to publication of his memoir Boy – Tales of Childhood. Apparently Quentin Blake was booked up, so Ian Craig from the publishing house Jonathan Cape did the final artwork and even suggested the title of the book.
The auction actually happened a couple days ago, and it looks like the lot went for £23,940. You can see the drawings themselves on the auction page. (I’ve also archived it for posterity.)
Interestingly, there were a couple other Dahl-related lots in the auction too: some other ephemera from the archives of Ian Craig (sold for £2,772; archive); Craig’s copy of The Mildenhall Treasure with dedication and original illustrations from Ralph Streadman (sold for £530; archive); and the publisher’s paste-up for The Minpins (sold for £5,040; archive).