Nivada Grenchen Chronomaster Aviator Sea Diver Ref. 3181 circa 1970

Beautiful example with a stunning patina, with the sought-after Valjoux 23 movement, in excellent condition.

Original broad arrow hands, with lovely aged tritium that matches the dial perfectly.

Very nice straight case with sharp lugs. Some wear around the outside of the bezel, which seems to be quite common on this watch.

Runs perfectly, including all chronograph functions, with good power reserve.

Comes on a custom hand-cut leather strap.