Eagle-eyed Joey Zone pointed me towards this one! It’s an item currently available from bookseller L. W. Currey. This is the only time I’ve ever seen a book cover for this edition which is the 1918 U.S. first edition of CAPTAIN GAULT. The book itself is not all that rare and good condition copies can usually be found for around $100 or so. Still, rarity aside, I’m not sure if that makes this worth the asking price!
Here’s the link in case you want to check out the listing:
I think you have time though as I doubt it’ll sell very quickly even though Currey states that this is not the first time they’ve sold this particular book.