Piaget Lapis Lazuli Tank Ultra Thin 18K Yellow Gold, Ref. 9150 (1970s)

Presenting an extraordinary Piaget Tank Ultra Thin Ref. 9150 from the 1970s, featuring a breathtaking natural Lapis Lazuli stone dial and powered by the legendary Piaget Calibre 9P Ultra Thin. Known for its architectural elegance, feather‑light profile, and use of precious stones, the 9P era represents Piaget at its peak—where artistry met technical mastery.

This example stands out as an ultra‑thin 18k yellow gold variant with a rare, rich‑blue Lapis dial paired with golden Roman numerals and matte gold dauphine hands. Collectors of stone‑dial watches will appreciate the beauty and scarcity of this piece.

Dial

• Stunning natural Lapis Lazuli dial, a highly rare and collectible configuration

• Golden printed Roman numerals that contrast elegantly with the deep blue stone

• Matte golden dauphine hands, beautifully preserved

• Transparency note: The dial shows a small crack in the lower-left corner, virtually invisible on the wrist and noted only for completeness

Case

• Ultra Thin profile with exceptional wearability

• Dimensions: 23 × 28 mm (classic Tank proportions)

• Solid 18k yellow gold heavy case, beautifully maintained

• Overall thickness of only 5 mm, characteristic of Piaget’s celebrated slim designs

• Sapphire crystal in excellent condition

Movement

• Manual-winding Piaget Calibre 9P Ultra Thin—one of the most iconic thin movements ever produced

• Recently serviced and running accurately

Strap & Buckle

• Black hand-made leather strap, crafted in Belgium

• Original Piaget 18k yellow gold buckle

Stone-dial Piaget watches from the 1970s have become increasingly sought after, especially examples featuring Lapis Lazuli in vibrant, richly saturated tones such as this one. The ultra-thin architecture, precious stone dial, and manual 9P calibre combine to create a piece that is sophisticated, elegant, and undeniably collectible.

This reference offers both rarity and beauty: the clean geometry of the Tank case, the luxurious 18k gold construction, and the distinctive blue Lapis dial make it a standout addition to any refined collection.

• Reference: 9150

• Era: 1970s

• Material: 18K Yellow Gold

• Case Size: 23 × 28 mm (Ultra Thin)

• Thickness: 5 mm

• Dial: Natural Lapis Lazuli stone with golden Roman numerals

• Hands: Matte golden dauphine

• Movement: Manual-winding Piaget 9P Ultra Thin, recently serviced

• Crystal: Sapphire glass

• Strap: Black hand-made leather (Belgium)

• Buckle: Piaget 18K yellow gold buckle

This Piaget Lapis Lazuli Tank Ultra Thin represents the golden era of Piaget—when the Maison mastered the blend of precious materials with ultra-thin engineering. The superb Lapis dial, historic calibre 9P, and refined proportions create a rare and visually arresting timepiece.

An exceptional acquisition for collectors of stone-dial watches, ultra-thin horology, or 1970s Piaget artistry. Feel free to inquire for further details or to reserve this remarkable piece.