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1976 Piaget Protocole 9150 - 18K Yellow Gold Onyx and Diamond Dial

Details

A High Point Of 1970s Design

The Piaget Protocole was a canvas for the brand's most expressive and luxurious designs, especially during the 1970s. While the model itself is known for its elegant, integrated case, this example pushes into a higher tier with its factory-set onyx and diamond dial. This was not a standard offering. Pairing the deep, flawless black of a stone dial with the brilliance of four diamonds was a costly and difficult process, reserved for top-tier configurations that represented the height of Piaget's work as both a watchmaker and a jeweler.

The Power Of A Stone Dial

This watch captures the essence of an era when Piaget was a leader in material experimentation and bold style. The combination of 18K yellow gold with a perfect black onyx dial and diamond markers creates a stark, high-contrast look that is confident and uncompromising. The manual-wind movement allowed for an exceptionally thin profile, making the watch wear like a piece of jewelry. It's a pure expression of late-70s luxury, a time when design was adventurous and materials were paramount.

A Well-Preserved And Rare Configuration

The 18K yellow gold case is in good condition, retaining its distinct rectangular shape. The onyx dial is the main event and presents well, although it should be noted a minor chip near 11 o'clock, hardly viewable by the naked eye. The watch is fitted on its original leather strap with the correct Piaget buckle and is accompanied by its papers. As with every watch we offer, this piece has been verified as mechanically sound and is ready to wear.

For The Discerning Collector

This is a watch for someone who understands the intersection of horology and high design. The Protocole is a classic, but the onyx and diamond dial elevates it significantly. It's not a watch that screams for attention, but it has a powerful presence on the wrist that is unmistakable. It works today as a statement piece that represents a period when Piaget's creativity was at its peak.


Key Specs

Reference: 9150

Includes: Papers

Model: Protocole

Year: 1976

Movement: Manual Winding

Case Size: 23x28mm

Bezel: Integrated 18K Yellow Gold

Strap: Original Leather and Buckle

Dial: Onyx with Diamonds

Metal: 18K Yellow Gold

SKU: 652

History

Piaget's identity as a manufacturer is inseparable from the pursuit of thinness. The brand's commitment to ultra-thin movements began in 1957 with the calibre 9P — a manually-wound movement measuring only 2mm in height that held the record for the world's thinnest movement at the time of its introduction. The calibre 12P, introduced in 1960 as an automatic version, was similarly record-setting at 2.3mm. These movements defined the technical proposition that Piaget would build its reputation on across the following decades: that the highest expression of watchmaking was not complication but reduction, and that producing a movement of maximum capability in minimum space required a level of craft that no other approach could match.

The watches built around these ultra-thin calibres were designed to allow the movement to be appreciated rather than concealed. Cases were kept as thin and as geometrically simple as possible, with dials that emphasized texture and material rather than the display of additional functions. The yellow gold case with a guilloché or stone dial became the characteristic execution of the Piaget dress watch during the 1960s and 1970s, and the combination of precious metal construction with the demonstrably thin movement created a proposition that was technically rigorous and aesthetically complete simultaneously.

Among collectors, the vintage ultra-thin Piaget dress watches occupy a position of significant interest that has grown as the market has broadened beyond sports references. The stone dial examples — lapis lazuli, malachite, onyx, and turquoise among the most sought after — represent a category of watch that no other manufacturer produced with comparable consistency or variety. These dials are cut from natural material and are therefore unique by definition, making each individual example a one-of-a-kind object. The collector who values the combination of technical mastery and material beauty will find the vintage Piaget catalog to be one of the most rewarding areas of the entire market.