The Unknown. A Play in Three Acts
$750 · Offered by Between the Covers
London: William Heinemann, 1920. Hardcover. First edition, hardbound issue. 12mo. Gray paper-covered boards with publisher's printed label on spine, copyright page is rubberstamped: "Made in Great Britain" (not noted by the bibliographer). The delicate binding has tiny tears at tip of spine and tip of one corner, printed spine label..... More
Found via Rare Books Intel, a search across rare-book dealers, auction houses and marketplaces worldwide.