For sale is a pretty rare 60s or early 70s vintage 3 register Zodiac Sea-Chron diver chronograph powered by Valjoux 72 movement (same as vintage Rolex Datyona).

From the 1971 Zodiac Catalog:
Underwater chronograph, 17-jewel, stainless steel case, water resistant to 660 feet, shock resistant, 1/5 second, 30 minute and 12 hour registers in white, luminous black dial and hands, 2 pushbuttons, anti-magnetic, tachymeter scale, rotating bezel with minute calibrations.

The hands and bezel are quite unique to the Sea-Chrono model. The unpolished steel case and black bezel have some signs of normal use.
Faded silver inserts are beautiful. Original Tritium dial is in very nice patina has NOT been refinished or re-lumed. The dial is signed "T Swiss Made T" at the bottom 6 o'clock area. Plexi glass in nice condition.
Keeps very good time, winds, sets fine and chrono hands reset straight up like they should. Comes on a 20 mm NATO strap.

Maker: Zodiac
Model: Sea-Chron
Year: Late 1960s
Case No: 1953xxx
Material: Stainless Steel
Dimensions: 39 mm diameter, 14 mm thickness
Crystal: Plexi
Lume: Ttritium
Caliber: Valjoux 72 manual-winding movement
Crown: service crown
Strap: Nato
Lug Width: 20 mm
Box/Papers: No

Here you will find my offer!