Rolex 116710 (Pre-owned - Excellent) — USD 16,700 on eBay

The Rolex GMT-Master II reference 116710BLNR, known by collectors as the "Batman," introduced a novel blue and black ceramic bezel to the GMT-Master II lineup. This was the first time Rolex combined two distinct colors on a single monobloc Cerachrom bezel, a significant technical achievement. The blue segment represents daylight hours, while the black segment denotes nighttime, aiding in tracking a second or third time zone. This reference features a 40mm Oystersteel case, housing the automatic Caliber 3186 movement, which provides a power reserve of approximately 48 hours. The watch is fitted with a sapphire crystal with a Cyclops lens over the date display and is water-resistant to 100 meters. The black dial provides a contrasting backdrop for the Chromalight hour markers and hands. Appealing to collectors interested in modern Rolex innovations and practical travel watches, the 116710BLNR quickly became a highly sought-after model. Its distinctive bezel color combination set it apart from previous GMT-Master II references and established a new aesthetic within the collection, preceding subsequent iterations with similar two-tone ceramic bezels.