Piaget Tank Ultra Plat Ref. 9150 – The Essence of White Gold Elegance
A masterpiece of minimalist luxury, this Piaget Tank Ultra Plat Ref. 9150 from the 1970s epitomizes the maison’s mastery of ultra-thin horology. Crafted entirely in solid 18K white gold, this rare Tank-style Piaget combines architectural refinement with mechanical finesse, powered by the legendary manual-wind Calibre 9P — one of the thinnest mechanical movements ever made.
Sculpted in White Gold – Refined Geometry
The 23 x 28 mm rectangular case, rendered in heavy 18K white gold, captures the discreet sophistication that defines Piaget’s design ethos. Measuring only 5 mm thick, its ultra-slim profile slides effortlessly under any cuff while radiating timeless elegance. The watch is topped with a flawless sapphire crystal, offering enduring clarity and scratch resistance.
A sapphire cabochon crown adds a subtle flash of blue, complementing the silvery tones of the case and dial. The result is a harmonious balance between restraint and luxury — a hallmark of Piaget’s golden era.
Pure Dial, Enduring Style
The factory-original white dial features black Roman numerals and classic baton hands, embodying understated perfection. This minimalist aesthetic speaks directly to Piaget’s philosophy: sophistication through simplicity. The dial’s pristine condition enhances the overall harmony of this ultra-slim design, creating a watch that feels both vintage and contemporary.
Mechanical Grace – Calibre 9P
Inside beats Piaget’s Calibre 9P, an ultra-thin manual-wind movement celebrated for its precision and innovation. Recently serviced and accompanied by a one-year mechanical warranty, the movement performs flawlessly while preserving its original heritage. The 9P remains a cornerstone of Piaget’s legacy — the foundation of many of the brand’s thinnest and most elegant creations.
Details at a Glance
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Reference: 9150
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Movement: Piaget Calibre 9P, Manual-Wind – Recently serviced, 1-year warranty
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Case Material: Solid 18K White Gold (heavy case)
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Case Dimensions: 23 mm x 28 mm
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Thickness: Only 5 mm
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Crystal: Sapphire glass
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Dial: Original white dial with black Roman numerals
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Crown: Sapphire cabochon
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Strap: Brand new, hand-made leather strap (crafted in Belgium)
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Era: Circa 1970s
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Condition: Excellent vintage condition; freshly serviced and ready to wear
Why This Watch
The Piaget Tank Ultra Plat Ref. 9150 stands as a paragon of mid-century design — refined, discreet, and mechanically superb. With its solid white gold construction, ultra-thin 9P movement, and timeless Tank geometry, it offers the perfect balance of form and function.
For those seeking the ultimate dress watch in its category, this Piaget delivers peerless elegance and horological pedigree at an exceptional value.
