Blancpain · Family: Fifty Fathoms
The Blancpain Fifty Fathoms Automatique 5015-1130-52A is the 45mm steel, black-dial version of the dive watch that originated the category in 1953. It runs the in-house Caliber 1315 with 5 days of power reserve and 300 meters of water resistance. Cazador has no verified price observations yet (n=0). Its standout detail: it's the modern dive watch most directly tied to the historical origin of the graduated rotating-bezel dive watch as a concept.
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In 1953, Blancpain introduced the Fifty Fathoms at the request of a group of officers from the French Navy's combat swimmer corps, led by Captain Robert "Bob" Maloubier, who needed a reliable instrument to track dive time. The result set the codes still considered standard on any dive watch today: a graduated unidirectional rotating bezel, high legibility, and luminescent markers.
The collection's name refers to fifty fathoms (roughly 91 meters), the maximum depth Blancpain considered safe for scuba diving at the time of the watch's launch; the family's water resistance has since grown well beyond that figure.
The current Automatique generation runs the in-house Caliber 1315, a movement with a triple mainspring barrel delivering 5 days of power reserve — an unusually high figure for a tool watch that reduces how often it needs winding or daily wear to stay running.
Reference 5015-1130-52A, in steel with a black dial, is the 45mm entry point into the Fifty Fathoms Automatique family, which is also offered in titanium and in various dial and strap combinations.
Cazador has no verified price observations for this reference (n=0 as of today). We do not publish estimates without our own sourced market data.
After fifty fathoms (roughly 91 meters), the maximum depth Blancpain considered safe for scuba diving when the watch launched in 1953.
It's widely credited as the first to set the graduated unidirectional rotating-bezel standard, developed in 1953 at the request of the French Navy's combat swimmer corps.
5 days (120 hours), thanks to its triple-barrel architecture — a high figure for an automatic tool watch.
300 meters (30 bar), well beyond the original fifty fathoms that gave the collection its name.
Reference 5015-1130-52A is steel; the family is also offered in titanium, with various dial and strap combinations (bracelet or sailcloth).