A perfect example of Piaget’s mastery in both design and technical innovation, this 1970s Tank reference 9657 features a rectangular 18k white gold case measuring 28 x 23,5 mm. The silver mirror dial is punctuated by elegant blue hands, while the bezel itself bears bold black hour markers—a distinctive and unconventional touch that adds graphic appeal to the design.
Inside, the watch houses the legendary Piaget caliber 9P. Introduced in 1957, this ultra-thin manual-wound movement was groundbreaking at the time: measuring just 2 mm thick, it was the slimmest hand-wound caliber ever made for wristwatches.
An elegant statement piece with historical significance, this Tank embodies the spirit of 1970s Piaget—where boundary-pushing mechanics met daring aesthetics.

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