Blancpain Fifty Fathoms HODINKEE "MIL SPEC" SS Black Dial LIMITED UNWORN

This Blancpain 5008-11B30-NABA — the Fifty Fathoms MIL-SPEC produced with Hodinkee in a limited run of 250 — is a faithful modern reprise of the dive watch that once satisfied the US Navy's most exacting underwater requirements, having been judged in Navy reports of 1958 and 1959 the only watch to meet all of its criteria, a piece for the collector who prizes tool-watch authenticity over ornament. It is driven by an automatic movement fitted with a silicon balance spring and a four-day power reserve, visible through the caseback by way of a solid-gold rotor finished in grey NAC and engraved with both partners' names. The brushed stainless steel case measures 40.3mm across with a thickness of 13.2mm, its unidirectional sapphire-insert bezel and screw-down crown built for genuine descent rather than the appearance of it. The dial is matte black, distinguished above 6 o'clock by the two-tone white-and-orange moisture indicator — the functional signature that defined the original military MIL-SPEC and shifts colour should water breach the case. A working piece of dive-watch history, reissued with quiet fidelity, it ranks among the most collectable of Blancpain's modern Fifty Fathoms.