Blancpain Fifty Fathoms MIL-SPEC 5008-1130-B52A

This reference, 5008-1130-B52A, identifies a specific configuration of the 500-piece limited edition Blancpain Fifty Fathoms “No Radiations” from 2021. The watch head itself is identical to the “NABA” version: a 40.3mm polished stainless steel case, a matte black dial with the iconic yellow-and-red “No Rad” logo, “Old Radium” colored Super-LumiNova, and a date window at 3 o’clock. Its historical context and significance are the same, paying tribute to the 1960s model that assured divers of its radiation-free lume. The key distinction lies in the strap provided. While the “NABA” suffix denotes the watch came on a Tropic-style rubber strap, the “B52A” suffix indicates this variant was delivered on a black sailcloth strap with a stainless steel pin buckle. This option provided a more classic and versatile look compared to the overtly vintage-inspired Tropic rubber. The watch is powered by the same in-house Caliber 1151, with a 100-hour power reserve. This reference highlights how manufacturers offer minor variations on limited editions to cater to different tastes, with the choice of strap being a primary differentiator.