Evans & Sutherland (E&S) 1994 Calendar Early Computer Imagery ESIG-4000 Series. A highly sought-after collector's item in the history of computing. Originally distributed primarily to corporate client's, military defense contractors and academic researcher's very few physical copies survived intact without markings. This copy is close to like new. Amazing condition. Please refer to the photos for identification cosmetic and physical condition because they are part of the overall description.