The Chrysalids

Per FictionMages, the serial in Argosy (UK) is "abridged and revised from Re-Birth (Ballantine, 1955)".

• "First published ... 1955" on copyright page. [Currey] • "Sept. 19" given in British Books (vol. 168), available at Google Books in snippet view: see whole text snippet in general search, image with the beginning of the book's entry, date line at the snippet with the following title. • Supplementary evidence: AbeBooks lists a second printing from Nov. '55. David Ketterer writes in Literary Encyclopedia "published by Michael Joseph in 1955 (four months after the American paperback Ballantine publication as Re-Birth)", not specifying either further (Re-Birth given in ISFDB as April, "from second Ballantine printing"). • Artist from AbeBooks; price from Tuck.