The Eiger Sanction

A Book Club Edition was issued and is documented by dealers. Tells: a blind stamp impressed on the rear board (Book-of-the-Month Club used a dot, circle, or square, sometimes coloured), no price at the jacket flap on an unclipped jacket, and lighter bulk with cheaper boards; some BOMC jackets also carry a small dot at the lower right of the rear panel. Because the trade jacket is uncommon, unpriced and clipped jackets are a frequent trap on this title — check the rear board rather than inferring from the jacket alone.