Blancpain Fifty Fathoms Flyback Chronograph “No. 323” – 18-Carat Rose Gold (750), Black Dial, Unidirectional Bezel, 45 mm

There are watches that are worn, and others that immediately assert a presence. This Blancpain Fifty Fathoms Flyback Chronograph belongs to the second family: a piece of high-end sports watchmaking where the warm glow of 18K (750) rose gold meets the depth of a highly contrasted black dial, designed for instinctive reading.

In the photographs, the balance is superb: the large graduated black unidirectional rotating bezel frames a structured dial, rhythmically marked by three chronograph counters and a fine scale that enhances the impression of precision. The applied indexes and luminescent hands catch the light with a very “tool” sobriety, while the date window at 12 o'clock provides a clear and immediate visual signature. The whole is complemented by a rose gold case that adds depth, without ostentation: it is luxurious, but never showy.

The mention of flyback is not a marketing detail: it is a complication designed to chain measurements naturally, with a straightforward gesture. On a Fifty Fathoms, this makes perfect sense: it embodies the spirit of an instrument watch, refined down to the smallest ergonomic choice.

Finally, the presentation visible in your photos is up to par: the watch is delivered with a rigid protective box and a case. It comes from the auction house Accademia Fine Art (Monte-Carlo, Monaco), accompanied by its invoice. It has been appraised by the auction house as well as by Ecoluxury. Notably, for perfect transparency: this is not a “full set” and the watch does not have the original papers.

Features:

• Brand / Model: Blancpain Fifty Fathoms Flyback Chronograph (mention “No. 323”)
• Case: 18K (750) rose gold, round, screw-down case back
• Diameter: 45 mm
• Gross weight: 163.5 g
• Bezel: unidirectional rotating, black, diving graduation
• Dial: black, luminescent indexes & hands, fine timer
• Functions: flyback chronograph, date (window at 12 o'clock)
• Counters: 3 sub-dials (chronograph reading and small seconds, according to visible configuration)
• Movement: automatic mechanical
• Bracelet: black/anthracite technical textile strap (visible stitching)
• Closure: 18K (750) rose gold pin buckle
• Condition: functional; signs of use; principle revision to be expected
• Box / documents: protective box + case (visible in photos); Accademia Fine Art invoice; without original papers (not a “full set”)
• Expertise / authentication: sold by the auction house Accademia Fine Art (Monte-Carlo, Monaco) (sale on July 16, 2024, lot no. 192) — named invoice/receipt available. Checked by Ecoluxury and accompanied by its Ecoluxury certificate of authenticity.