Nivada CASD V23

Released in 1963, the Chronomaster Aviator Sea Diver was Nivada’s do-it-all offering, and the model that would become truly the most iconic for the brand. Suitable in any demanding situation from the land, to the air, to the sea, the model had literally almost anything a professional would need. With a manually wound Valjoux chronograph movement as its heart, the dial featured a tachymeter for measuring speed, a bi-compax layout with small seconds at nine, and a chronograph minute totalizer at three o’clock. This subdial could be used to count up to 30 minutes of elapsed time, or, with its purposeful red highlights, count down the last five minutes before an event, such as a regatta.

Our CASD is a 2nd generation of the model, approximately from 1966,
The "new" dial has the N logo prominently displayed, the index at 12 o'clock does not have the classic "dots," and the words "Grenchen" are placed under the name of the maison.
In addition to having baton spheres with red lollipop trotteuse, it differs from the previous generation in several features such as the oversized pushers, the "n" logo on the crown, the medallion case back, and the movement becoming a Valjoux 23.

The mounted bracelet is a truly rare steel elastic rivet with spring lugs. The condition of the watch is museum-like, both in terms of coevidence and quality of preservation.