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Blancpain. A fine and rare stainless steel automatic diver's bracelet watch Blancpain. Belle et rare montre bracelet de plongée en acier mouvement automatique Fifty Fathoms, Circa 1955 image 1
Blancpain. A fine and rare stainless steel automatic diver's bracelet watch Blancpain. Belle et rare montre bracelet de plongée en acier mouvement automatique Fifty Fathoms, Circa 1955 image 2
Lot 16

Blancpain. A fine and rare stainless steel automatic diver's bracelet watch
Blancpain. Belle et rare montre bracelet de plongée en acier mouvement automatique Fifty Fathoms, Circa 1955

Paris Fine Watches including an Exceptional Private Collection
17 October 2025, 14:00 CEST
Paris, Avenue Hoche

€35,000 - €55,000

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Blancpain. A fine and rare stainless steel automatic diver's bracelet watch

Blancpain. Belle et rare montre bracelet de plongée en acier mouvement automatique
Model: Fifty Fathoms
Date: Circa 1955
Movement: 17-jewel Rayville Cal.R.570 automatic
Dial: Black, luminous applied baton hour markers with Arabic numeral quarters, white outer 1/5th second divisions, white pointed baton hands with luminous insert, centre seconds
Case: Brushed and polished tonneau form, screw down back, calibrated bi-directional bezel, No.2765
Strap/Bracelet: Fixoflex stainless steel link
Signed: Case, dial & movement
Size: 41mm
Accompaniments: Complete analysis report from Blancpain manufacture, travel pouch

Footnotes

The Blancpain Fifty Fathoms is one of the first true professional diving watches. Designed for the French Navy, it met the strict requirements of military divers. Featuring a 41 mm stainless steel case, it had a black dial with luminous markers, an unidirectional rotating bezel, and water resistance up to 91,45 meters (50 fathoms). The automatic movement Rayville calibre provided reliable accuracy. This watch was tested in real conditions, with positive feedback on its performance at depths of 100 meters. It also proved its robustness when a watch lost at 53 meters underwater was recovered and still worked perfectly after 24 hours. The Fifty Fathoms is recognized as a landmark in the history of diving watches, combining technical innovation with functional design. It laid the foundation for future professional dive watches, influencing numerous later models.

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M.A.D.EDITIONS. A STAINLESS STEEL AUTOMATIC SEMI-SKELETONIZED JUMPING HOUR WRISTWATCH WITH ROTATING BEADED ROTORRef: M.A.D.2 GREEN, c. 2025
PATEK PHILIPPPE. A FINE AND ATTRACTIVE 18K ROSE GOLD AUTOMATIC WORLD TIME WRISTWATCH WITH CLOISONNÉ ENAMEL DIAL World Time, Ref: 5131R-001, Purchased 3rd October, 2015
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Alexandre Meerson. A titanium automatic wristwatch Altitude Première Small Seconds, Circa 2014
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Alfred Dunhill. A Limited Edition stainless steel onyx cacholong and diamond set quartz bracelet watch Facet Square Prestige, Ref: 8026, Limited Edition No.11/25, Circa 2000
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