Genuine Seiko 7S26A automatic movement. Black Date wheel - Keeping good time
This is the highly sought-after 1st-generation 7S26A revision with the black date wheel, featuring the classic compact, small-type rotor configuration originally engineered for solid, closed-back cases.
Crucially, this specific movement was manufactured from the factory with a stark black date/day wheel assembly, making it the exact, correct historical engine for elite black-dialled Seiko tool watches where a white date window would ruin the dial symmetry. This engine is an unused component that has never been mounted in a retail customer watch case.
The Correct Factory Heart for Premium Late-1990s Icons
This exact small-rotor, black-calendar 7S26A configuration was specifically engineered to power Seiko's premium, dark-themed sport and tool watches, including:
- The Premium SKX Divers: The definitive factory-correct replacement engine for the high-end Seiko SKX171 (the dressier, polished-bezel sister to the SKX007) as well as the mid-size SKX169 and SKX185 deep-sea divers.
- The 5 Sports "Historical Collection" Re-Issues: The exact native movement for the highly collectible late-90s SBSS001, SBSS003, SBSS005, SBSS013, and SBSS015 military and rally re-issue series.
- Stealth Seiko 5 Classics: Perfect for early closed-back sports variants like the early SNZF17 "Sea Urchin" and black-sunburst dress references (7S26-0020, 7S26-0030, and 7S26-0250 case series).
It represents a fantastic asset for a watch repair professional, custom builder, or vintage collector.
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