Piaget Automatic Extra Plat Clous de Paris Hobnail 18k White Gold Cal 12P Micro Rotor Ref 12448 from 1970s

Exceptional Piaget Automatic Extra Plat in 18k white gold, reference 12448, featuring the legendary Calibre 12P micro-rotor movement—one of the most important milestones in the history of ultra-thin watchmaking and among the finest automatic movements ever produced. Crafted in solid 18k white gold, the elegant 33 mm case showcases a remarkable Clous de Paris (hobnail) finish that extends across both the dial and case, creating a sophisticated play of light and texture. The distinctive horizontal oval-shaped dial opening gives the watch a uniquely architectural appearance, embodying the bold yet refined design language of Piaget during the 1970s. The original hobnail dial remains beautifully preserved, displaying only minor signs of natural aging consistent with its vintage character. Blue steel hands provide a striking contrast against the textured silver surface, enhancing both elegance and legibility. At the heart of the watch beats the legendary Piaget Calibre 12P, an ultra-thin automatic movement with micro-rotor construction. Upon its introduction, the 12P was the thinnest automatic movement in the world, a technical masterpiece that remains highly revered among collectors today. Remarkably, the watch measures only 5 mm in thickness, an extraordinary achievement for an automatic timepiece and a testament to Piaget’s unmatched expertise in ultra-thin horology. The unpolished case retains crisp original finishing and sharp hallmarks, while the spotless mineral crystal further emphasizes the exceptional state of preservation. The watch is fitted with its original Piaget leather strap and original Piaget 18k white gold buckle, completing an increasingly rare and desirable original package. Key highlights: 33 mm case in solid 18k white gold Reference 12448 Legendary Piaget Cal. 12P automatic micro-rotor movement Ultra-thin profile of only 5 mm Original Clous de Paris hobnail dial and case finish Distinctive horizontal oval dial aperture Blue steel hands Original unsigned white gold crown Original Piaget leather strap Original Piaget 18k white gold buckle Unpolished case with crisp hallmarks Spotless mineral crystal Circa 1970s A rare and technically fascinating Piaget, combining groundbreaking ultra-thin watchmaking with sophisticated 1970s design. Elegant, understated, and exceptionally well preserved, this is a true connoisseur’s piece from one of the masters of haute horlogerie.