**OVERVIEW** In 1969, Zenith joined Heuer and Seiko as the first brands to develop and launch an automatic chronograph watch. Zenith’s mechanism was the most complex of the group, utilizing a column-wheel chronograph within a high-beat movement that could maintain accuracy down to 1/10 of a second. They dubbed their achievement the “El Primero” and fitted it within the A384, A385, and A386 watches in the fall of that year. In the summer of 2021, Zenith took direct inspiration from the A386 El Primero and released the Chronomaster Original. The new model came with the same case size, shape, and dial design, but with a few modern upgrades including a sapphire crystal, Super-LumiNova, an exhibition case back, and a chronograph function that can measure up to 1/10th of a second. While pretty much any El Primero in the classic 38mm size is worth collecting, this particular reference stands out with its coveted tri-color dial that is very dynamic in different lighting and absolutely mesmerizing on the wrist. ​ **SPECIFICATIONS** **Brand:** Zenith **Model:** Chronomaster Original **Reference:** 03.3200.3600/69.C902 **Year:** 2020s **Case Number:** 595 809 **Case Material:** Stainless steel **Diameter:** 38 mm **Lug Width:** 19 mm **Thickness:** 12.6 mm **Lug-to-Lug:** 45.9 mm **Dial:** Silver **Lume:** Super-LumiNova **Crystal:** Sapphire **Movement:** Automatic **Caliber:** El Primero 3600 **Bracelet/Strap:** Zenith navy calfskin strap with deployant buckle *Hand model has a wrist size of 6.2 in* ​ **CONDITION** *UNWORN: Case is pristine with no signs of use. Original stickers may still be present. Dial, hands, and lume have no imperfections and may show natural, even aging.* **Case:** The stainless steel case is in pristine condition with no signs of wear. The lugs are thick, sharp, and factory fresh. The central caseback is protected by a clear sticker. **Dial, Hands, & Crystal:** The silver dial and painted hands are in perfect condition with fully functioning Super-LumiNova. The front and rear sapphire crystals are squeaky clean and scratch-free. **Bracelet/Strap:** The Zenith calfskin strap shows no signs of wear, with no creasing or fraying at the holes. The deployant clasp retains the original blue protective stickers. ​ **MOVEMENT** **Timing:** The watch has been measured with a timegrapher at six different positions. The rate, amplitude, and beat error are within acceptable ranges. While resting face up, the rate is -5s/d. **Functions:** All functions including the crown winding, time setting, quickset date, and chronograph start/stop/reset are working as expected. **‍Service History:** None. ​ **WHAT'S INCLUDED** \- Zenith Chronomaster Original on a navy calfskin strap. \- Boxes, instructions, and microfiber cloth. ​ Pictures: [https://imgur.com/a/CIdaZgY](https://imgur.com/a/CIdaZgY) Timestamp: [https://imgur.com/a/QOCZBaE](https://imgur.com/a/QOCZBaE) ​ **PRICE & DELIVERY** I'm asking **$6,300** net to me via bank transfer, Zelle, or PayPal + fees. The price includes expedited shipping via FedEx within the U.S. and internationally. Trades will not be accepted. Feel free to reach out if you have any questions and I'd be happy to answer them for you. I've sold numerous watches on the forums and can provide references at your request. Thanks for looking! ​ Follow us on Instagram: [tickingtimehomme](https://www.instagram.com/tickingtimehomme/) Check out our website: [tickingtimehomme.com](https://www.tickingtimehomme.com/shop/2020s-zenith-chronomaster-original-zen-c902-m16-003)