Croton watch sea diver manual#

Taking cues from the original Antarctic, which was used by the U.S. In 2018, the Nivada Grenchen brand was rebirthed with its two iconic models at the forefront-the Chronomaster Aviator Sea Diver and the Antarctic. The business was no longer profitable in the early 1980s, even with the new product lines, including ‘fashion watches’ with Leonardo da Vinci models. The phenomenon caused a drastic drop in the market shares of traditional Swiss mechanical watch manufacturers.ĭespite this, Nivada Grenchen remained optimistic and attempted to maintain the brand by broadening its product choices.

The biggest challenge for Nivada Grenchen happened in the late 1970s when quartz watches started to dominate the watch market.

Croton watch sea diver manual#

Using of Valjoux 23 and Valjoux 234 caliber in some models, including the 1977 Chronograph Aviator Sea Diver model using the Valjoux 7765, a manual wind version of the Valjoux 7755.Replacing of Valjoux 92 to Valjoux 7733 (non-column wheel type movement).Changing of the Nivada Grenchen logo to an ‘N in a shield’ on the dial.From having dauphine and arrow hands to stick hands with tritium.Among the notable changes were the following: During this time, the designs were constantly changed. The Nivada Grenchen Chronomaster was a success that its production lasted until the end of 1970. Moreover, Nivada Grenchen used Ebauches SA calibers, primarily because the company did not make its ébauches. The standard movement used by Nivada Grenchen back in 1950 was Valjoux 92, which was specifically used in its early Chronomaster models. Nivada Grenchen was one of the competitive brands that contributed to the rise in exports from the Swiss chronograph industry – from 52,000 in 1964 to 173,000 in 1969.

The 1960s also marked the year for the booming Swiss chronograph market. A year later, another diving timepiece was introduced under the Depthmaster model – a dive watch that could withstand a pressure of 100 ATM or 1000 meters. It was the first diver watch with a depth indicator or bathymeter. In 1964, Nivada Grenchen released another breakthrough timepiece – this time, a diver’s watch called Depthomatic. It had three distinct collections, namely: Chronomaster, Aviator, and Sea Diver. In 1963, the company launched the Chronomaster – a waterproof chronograph up to 200 meters. There is a tachymeter around the circumference of the dial and a minute and seconds track around the circumference of the dial.Since then, Nivada Grenchen has become known for its Antarctic’s robust and reliable performance in extreme conditions. The subdials are painted white with running seconds at 9 o’clock, chronograph minutes at 3 and chronograph hours at 6 o’clock. The sub dial hands are all painted black. The Hour, Minute and Chronograph Seconds hands are all silver in color and have luminous compound. The dial is matte black in color with silver hour marker inserts. This is a very cool, large piece which comes with an interesting story, making it perfect for many collectors. The watch has been fitted with a brand new heavy stitch Hirsch strap. The watch is in fair condition with its original screw down crown and rotating bezel. Of course we can come up with any story to suit our own narrative but we have since found multiple models with the same ghosted Croton front behind the Rotary logo making this certainly not a one off. We think that Rotary had a few pieces, removed just the Croton logo and applied theirs making the watch quite unique. When we looked closer at the rotary logo we noticed some ghost font that starts with a “C” and ends with a “N”, Croton? we think so. What makes this watch so interesting, and somewhat mysterious, is that this watch model is from Croton (Nivada Grenchen) and we have not seen a partnership from them before. The watch is housing a manual wind Valjoux Cal 7736 Chronograph movement.

This is an interesting, large Rotary Croton Diver-Chronograph that back in the day was water resistant to 200m.