Pocket knife, having at least one side fabricated from a molded plastic material, includes a decorative element, for example a cross, inlaid flush with an outer surface of the side. The decorative element is stamped from a sheet of steel to provide a cross and a square frame which are positioned with respect to each other by two attachments. A greater portion of each attachment is pressed down, by stamping, from a curved first plane occupied by the cross and the frame to a lower second plane under the curved first plane. This greater portion is covered over by the molded plastic material. At least one portion of lateral flanks of the decorative element is disposed at an inclined angle in order to be partially covered over with the molded plastic material. Only one single operation is required for injecting the side of the pocket knife and for inlaying the decorative element in the outer surface of the side of the pocket knife.