Grendel

No Grendel-specific book-club variant is separately documented in the sources consulted, so no title-level tell can be asserted. The general Knopf-era book-club tells apply and should be checked: the copyright page lacks the 'First Edition' statement, the rear board carries a blind-stamped depression (circle, dot or square) near the lower corner, the jacket carries no price at the flap, and the bulk is smaller and lighter on thinner paper than the trade issue.