This 4th print Pan paperback is the first (and only) Pan impression to feature what is often known as the “Directors' Series” design - books featuring new artwork (showing Dr No more prominently than Bond and Honey Rider), but more obviously showcasing a coloured band at the bottom, with an image of gun-toting Ralph Vernon-Hunt as Bond [Vernon-Hunt was the managing director of Pan books at this time.] Dr No is considered the rarest of the Directors' Series books, as it only appeared for a single printing (the 4th impression). This compares to other titles in the series (such as Moonraker, Casino Royale, and others), which had a minimum of two, and sometimes three printings in this design. This example is a rarely-found, extremely good condition copy, with little to no wear, tight binding, only a very feint crease to the spine, and mark-free (and very bright) inner pages. The back wrapper is a little marked, but overall this is a very tight, solid example, with no bent or damaged corners. Not often found this nice.