FAVRE-LEUBA. MONTRE BRACELET DE PLONGEE EN ACIER AVEC PROFONDIMETRE MOUVEMENT MECANIQUE

FAVRE-LEUBA. A STAINLESS STEEL MANUAL WIND DIVER'S WRISTWATCH WITH DEPTH GAUGE Bathy 50, Circa 1960

FAVRE-LEUBA. A STAINLESS STEEL MANUAL WIND DIVER'S WRISTWATCH WITH DEPTH GAUGE
Model: Bathy 50
Date: Circa 1960
Movement: 17-jewel Cal.320 Peseux manual wind
Dial: Grey with light grey and red chapter, applied faceted baton hour markers, outer 50 meter division scale, subsidiary seconds at 6, pointed baton hands with lollipop minutes, red baton hand for depth indication
Case: Brushed and polished cushion form, screw down crown and back, 60-minute graduated bi-directional revolving bezel, No.53253
Strap/Bracelet: Black tropic
Buckle/Clasp: Stainless steel buckle
Signed: Case, dial & movement
Size: 43mm

One of the most revolutionary diver's watches ever made, the groundbreaking Favre-Leuba 'Bathy' was the world's first wrist watch to incorporate a mechanical depth gauge for measuring depth underwater.

Dive time can be adjusted and monitored using the rotating bezel with 60-minute graduations and the minute hand. A diaphragm inside the case transmits the pressure changes underwater to the red hand of the depth gauge, which indicates depths up to 50 m on the outer dial scale. On ascent, a red scale on the dial supports the diver in keeping within the necessary decompression times.