A watch for all time – Nivada Grenchen CHRONOMASTER Asking Price: **Watch & Book** $2,200 Shipped (Wire, Zelle, PayPal +4%) CROTON NIVADA GRENCHEN CHRONOGRAPH AVIATOR SEA DIVER Swiss Made Chronomaster Wristwatch The best endowed chronograph watch in the market in the 1960s. A magnificent example of a first generation Chronomaster/Chronograph. This is a vintage Croton Nivada Grenchen Chronograph Aviator Sea Diver wristwatch also known as the super-chronograph or chronomaster. From the first generation and marketed by Croton, reference 105-18478. This chronomaster model was launched in 1961, probably intended for the United States and advertised as THE WORLD’S BUSIEST WATCH – HAS MORE USES THAN EVER COUNTED. This super-chronograph watch was for sure quite revolutionary at the time, it comes as somewhat of a surprise that this Chronomaster model manages to combine: \*stop watch (chronograph), \*time out stop watch, \*doctor’s watch, \*yachting timer, \*tachymeter scale, \*aviator’s watch, \*second time zone (on the bezel), \*skin diver’s watch, \*rotating bezel for diving, \*200m water resistant and \*regular watch. The only watch to combine all these features in 1961. This model met everything that the market wanted at the time and epitomized the professional sports watch. This model also won considerable popularity in the United States where it seems to have been sold the most. Imported to the United States by Croton, this is a manual-wind chronograph watch powered by a high-quality movement caliber Venus 210 and signed by Croton Nivada SA Grenchen. 17 jewels, sub-second at 9 o’clock, chronograph: central 60 seconds, 30-minute counter at 3 o’clock. 18,000 A/h, 40 hours power reserve, Swiss made. It still features the original black dial with the two sub-dials: sub-second and 30- minute counter, one of which features a red colored section (the so-called yachting countdown sector covering the first 5 minute of the counter). Painted hour markers, a tachymeter scale around the minute scale. Large broad arrow metal hands. The dial is also signed “Croton Nivada Grenchen Chronograph Aviator Sea diver.” All the hands are original with the possibly exception of the left sub-second-hand that in fact was used by Croton Nivada Grenchen in future generations of this watch. Cased in a 38.5mm round all stainless-steel case and the wide rotating bezel with black aluminum inset and twin scales. Original teeth crown and small pushers. 200m waterproof and shockresistant. It comes on a new-old-stock brown Technos two-piece strap. This watch is also coming with the “Chronomaster Only The Super-Chronograph by Nivada & Croton” book by Gregoire Rossier and Anthony Marquie. *Happy to provide more pictures and/or answer any question.* *Cheers,* *Genesis from Second Hand Horology*