The Ancient Child

No book-club issue is documented in the sources consulted; the dealer listings examined all describe trade copies. If a Doubleday club printing exists, the period tells would apply: an unpriced jacket, a five-digit code in a white block on the rear jacket panel, absent bar code, thinner bulk and cheaper binding, and a blind stamp at the lower rear board — and note that a Doubleday club copy can still show "First Edition" on the copyright page, so the stated line must always be checked against the jacket and binding.