This timepiece is a magnificent artifact from January 1987, as confirmed by the serial number 710119. The Lassale series is defined by its uncompromising pursuit of the "ultra-thin" aesthetic, featuring a breathtaking grey linen-textured dial that offers a sophisticated, executive depth. It is powered by the legendary Caliber 2F50, a high-grade quartz heart engineered to be remarkably flat, allowing the watch to sit with a profile so slim it disappears effortlessly under the most tailored shirt cuff.

The architecture is quintessentially refined, utilizing a rectangular two-tone case with a polished steel body and luxurious gold-toned bezel accents at the top and bottom. The dial is a work of high-end JDM art, featuring minimalist baton hands and a clean "Lassale" script that prioritizes pure aesthetic balance over unnecessary clutter. Flipping the watch over reveals the solid stainless steel caseback and the Daini "lightning bolt" logo, definitively confirming its authentic Japanese Domestic Market (JDM) heritage. This is an essential acquisition for an elite collector who appreciates industrial minimalism, the mechanical soul of a precision electronic heart, and the bold, shimmering presence of the Lassale.