The watch is powered by a 17 jewel Cal 11/14 movement which is a legendary Breitling-Heuer micro-rotor automatic chronograph movement in rare 24-hour configuration looking very bright and clean. For whatever reason most of these Breitling 2115s have Cal. 11 engraved on the bridge, although technically the GMT complication makes it a cal. The watch is keep good time loosing about 4mins a day so could certainly do with a service if you intend to regularly wear it.
PX considered (Omega, Rolex, Breitling, Zenith or any interesting divers watch). Please let me know first to avoid disappointment. Please see my other watches for sale. The item "Super Rare Vintage Breitling Chrono-matic GMT ref 2115 from early 70s" is in sale since Sunday, October 21, 2018. This item is in the category "Jewellery & Watches\Watches, Parts & Accessories\Wristwatches".
The seller is "andyvball101" and is located in Reading. This item can be shipped worldwide.