1980 Rolex Explorer II 1655 with a gorgeous dial that is free of any chips or scratches with all lume intact. The crystal has quite a few scratches, but I have inspected it anything that appears like it could be on the dial is on the crystal. If you would like more photos, just let me know. The serial batch is 6,2xx,xxx dating it to 1980 which is correct for the mk4 dial. The bracelet is a 93150 with 501B endlinks.