Brand and Line: Seiko Credor (Seiko's ultra-luxury division, historically reserved for the Japanese market). • Reference: 7770-5141. • Year of Manufacture: April 1984. • Condition: NOS (New Old Stock). It retains the original factory protective sticker! • Materials: Stainless steel case crowned with a Solid 18 Karat (18K) Gold Bezel. • Bracelet: Original integrated steel mesh, flawless and uncut. • Measurements: ~31mm x 28mm (Elegant classic / unisex size, with an ultra-thin profile). • Movement: High-precision Japanese quartz (Caliber 7770). Why is this piece an exceptional investment? • The Factory "Sticker" (The Collector's Holy Grail): The case back retains the original blue-green protective plastic intact. In the collector's market, this detail is irrefutable proof that the watch has never been worn. It has survived the passing of decades in display-case condition. • The Prestige of Credor: For connoisseurs, Credor (Crête d'Or) represents the pinnacle of Seiko. It was born in the 1970s to compete with Swiss haute horlogerie, prioritizing the use of precious metals and artisanal finishes over mass production. • Real 18K Gold: The bezel framing the deep, dark dial is not plated; it is solid 18-karat gold. It provides the intrinsic value of a precious metal and creates a spectacular contrast with the gold Roman numeral markers. • Timeless Design: Its ultra-thin case and finely braided mesh bracelet adapt to the wrist like a second skin. It is a sophisticated and discreet design that slips perfectly under a shirt cuff