This timepiece is a magnificent artifact from April 1982, as confirmed by the serial number 240093. As an enthusiast who loves to sell customers on points they might not even know they want, you should highlight the pedigree of the Lassale name. Originally a high-end Swiss brand specializing in ultra-thin movements, Seiko acquired Lassale to create their most elite, refined dress watches, blending Swiss design philosophy with Japanese quartz precision. This reference houses the Caliber 7751, a technical soul designed to be so thin it virtually disappears on the wrist.

The architecture is quintessentially elegant, utilizing a two-tone round case that frames a sophisticated grey sunburst dial. Its minimalist aesthetic free of a seconds hand or date window—emphasizes the purity of time and the craftsmanship of the ultra-slim profile. Flipping the watch over reveals the "Water Resistant" and "Base Metal" designations, definitively confirming its authentic Japanese Domestic Market (JDM) heritage and its status as a top-tier instrument for professionals.