From Girard-Perregaux, presenting the 1966 (ref. 49551-11-132-BB60), a distinctive model that balances proportion, precision, and presence. On the wrist, the case feels purposeful: crafted in stainless steel and measuring 44 mm in diameter, with a thickness of 9.82 mm, defined by a round silhouette. The caseback is open, and the crystal is sapphire, delivering water resistance to 3000 meters. Visually, the face is where character emerges: a silver tone with guilloche finish, framed by stick / dot hour markers, and feuille hands. Among collectors, it is nicknamed "Silver Opaline". Mechanically, the watch prioritizes accuracy: the GP01800-0004 caliber. The silhouette offers presence without excess, lending confidence in a range of situations. Finishing showcases disciplined attention to detail across facets, edges, and surfaces. For buyers researching specifications and real-world impressions, this reference stands out for coherent design, dependable mechanics, and lasting relevance within modern horology.