Longines Watch Master Collection 190th Anniversary L2.793.4.73.2. To mark its 190th anniversary, Longines is presenting a series of exclusive timepieces from The Longines Master Collection, which stand out for their meticulous workmanship and the special care lavished on every detail. The sandblasted silver dial is distinguished by its unique finish and delicately engraved Arabic numerals. Elegant blued steel hands mark the passing hours, minutes and seconds, highlighting the dial’s refined purity. The 40mm-diameter stainless steel case houses an exclusive in-house Longines movement with a silicon balance-spring. All the painstaking craftsmanship of this calibre can be admired through the transparent back, which features a commemorative engraving. A soft, anthracite grey leather strap completes the style of this high-end piece.