Why This Watch Matters Not only does this Piaget house the revolutionary caliber 12P; it also comes with a waterproof case, which is no doubt how the cross-hair dial has remained in such stunning condition. The Full Story Launched in 1960, the caliber 12P was the thinnest automatic caliber for almost two decades. It was born from the preliminary research put into the manual wound caliber 9P, patented in 1956; the 12P was completely rebuilt to accommodate the heavy micro-rotor, which is sustained by a delicate bridge. Beyond the movement, the yellow-gold case here is waterproof, following a monobloc construction. This helps to explain the excellent condition of the cross-hair dial; the water resistance (or lack thereof) of “regular” slim vintage Piaget watches was often a concern, as it led to damage to the dial and movement. This watch was considered the very best in the 1960s, and it still looks dashing to this day. The Fine Print Maker: PiagetModel: NAReference: 12303Year: 1960sCase No: 81083Material: Yellow goldDimensions: 34mm diameter; 5mm thicknessSapphire Crystal: NoLume: NoCaliber: Ultra-thin automatic caliber 12PBracelet/Strap: Piaget-signed leather strap with original buckleLug Width: 18mmBox/Papers: Yes, original papers What we Love and What You Should Know This watch is in spectacular condition; thanks to its monobloc case, the cross-hair dial has been beautifully preserved. The thin case does not seem to have been previously polished, as the hallmarks are clearly visible on the sides of the lugs. The automatic movement works properly. There is a small scratch visible on the crystal above 5 o’clock. The watch also comes with its original papers, which document a sale in the Virgin Islands.
