Signed book: The Double Helix. Later printing (possibly book club). NY: Atheneum, 1968. Hardcover with dustjacket, 5.75 x 8.5, 226 pages. Signed in ballpoint on the title page “James D. Watson,” and in black ink, “Francis Crick.” Light edge wear with a few tiny tears to jacket, tiny edge tear to one page, and slight bumping at spine ends, otherwise fine, clean condition. R&R COA.