LECOULTRE REF. 857 DEEP SEA ALARM AUTOMATIC STEEL
LeCoultre, Deep Sea Alarm Automatic, case No. 775231, Ref. 857. Made in 1959.
Fine and very rare, center seconds, self-winding, water-resistant, stainless steel wristwatch with
alarm and 2 crowns. Accompanied by Lecoultre serviced papers dated on 2014/12/12 (total
amount is JPY 254,016) , Extract from the archives and lecoutre later hands.
Three-body, polished and brushed, lapidated lugs, graduated black bezel, case back with outer
screw ring and engraved with the Deep Sea logo, the crown at 2 o`clock activates the central
revolving alarm dial, the one at 4 o`clock is for time-setting and winding.
Bicolor black and silver with luminous baton indexes, outer 5-minute/second radial Arabic
markers, at the center, revolving alarm setting dial. Luminous steel dauphine hands.
Cal. K815, rhodium-plated, 17 jewels, straight-line lever escapement, monometallic balance,
shock absorber, self compensating flat balance spring, index regulator, bumper-type rotor.