Blancpain Fifty Fathoms Automatique Limited Edition Steel 40.3mm Black Dial 5008 1130 B52A Blancpain Fifty Fathoms Automatique Limited Edition Steel…

The Blancpain Fifty Fathoms is widely regarded as the world's first modern dive watch, born in 1953 from a collaboration between Blancpain and the French Navy's combat swimmer units. Seventy years on, the collection remains the gold standard against which all serious dive watches are measured, combining genuine professional heritage with the finishing quality expected of a prestigious Swiss manufacture. The limited-edition reference 5008-1130-B52A is a contemporary expression of that legacy, retaining the soul of the original while incorporating materials and refinements that only Blancpain's Geneva ateliers can deliver.

At 40.3mm in stainless steel, the 5008-1130-B52A occupies a sweet spot that dive-watch purists and dress-watch admirers alike find compelling. The case diameter is faithful to the proportions of the original 1953 Fifty Fathoms—notably more restrained than the 45mm Bathyscaphe—making it supremely wearable under a shirt cuff while still commanding presence on the wrist. The brushed and polished surfaces of the steel case are executed to Blancpain's exacting standards, with sharp transitions between finishing zones that speak to hand-finishing at the movement level.

The defining visual signature of this reference is its sapphire crystal bezel, a specification that elevates the 5008-1130-B52A well above the already high bar set by standard Fifty Fathoms variants. Sapphire is second only to diamond in hardness on the Mohs scale, meaning the unidirectional timing bezel resists the scratches and abrasions that inevitably mark ceramic or aluminum alternatives over years of daily wear. The bezel's transparency allows the full architecture of the case and dial to read as a cohesive whole, lending the watch an almost architectural clarity that photographs rarely do justice.

The black dial with index markers is classically legible and true to the Fifty Fathoms tradition of prioritizing underwater readability. High-contrast luminous plots at the indices and on the hands ensure instant legibility in any light condition, while the overall dial composition remains uncluttered and purposeful. The rubber strap is both practical—comfortable against the skin in warm or wet conditions—and aesthetically consistent with the watch's professional dive DNA, securing the piece on the wrist with the confidence a tool watch demands.

Powered by Blancpain's automatic movement, the 5008-1130-B52A delivers the smooth, reliable performance the manufacture's calibers are known for, housed in a case engineered for serious aquatic environments. As a limited edition, production numbers are finite, and examples reaching the secondary market represent a genuine opportunity for collectors who missed the original allocation. Bizak & Co. specializes in sourcing and authenticating precisely these kinds of high-demand Blancpain references. Browse the full selection at bizakandco.com or reach out directly to our team for provenance details, condition reports, and competitive pricing on this remarkable Fifty Fathoms.