A true grail for vintage collectors and diving watch enthusiasts alike, this 1976 Rolex Sea-Dweller Double Red, reference 1665, is an extraordinary example of one of Rolex’s most iconic tool watches, preserved in all original and highly attractive condition.  The elusive "Double Red" dial, with its bold twin lines of red text, remains crisp and vibrant, while the hands and hour markers have developed a warm, even patina that speaks to the passage of time and the authenticity of its vintage character. Unlike many examples that have been over-polished, serviced, or modified over the decades, finding a 1665 Double Red in such honest, untouched condition is exceptionally rare as these were purpose built instruments for professional divers, often worn hard and retired in pieces.  This particular watch stands out not only for its originality but also for its soul. The caseback is engraved with a touching inscription: *‘Dad – 76’,* a simple but powerful reminder that this watch was once a cherished gift, worn and valued through generations. For nearly half a century, it remained in the hands of the original family, lovingly preserved, and now it’s ready to become part of a new story.  The serial begins with 41xxxxx dating this watch to 1976. The bracelet is also matching and is marked 1/76 dating the bracelet correctly to 1976. **THE DETAILS** **Case:** 40 mm stainless steel case which is in attractive condition with sharp thick lugs. The sides of the case show signs of honest previous wear. **Bezel:** Original black inner bezel in attractive condition. The stainless other ring is crisp and sharp. **Dial/Hands:** Original Rolex all original matte dial in stunning condition featuring creamy patina on the lume markers. Hands also have a matching creamy patina which adds to the overall eye appeal. **Caseback:** Original stainless steel showing honest signs of previous wear including a caseback engraving.  **Movement**: Original Rolex automatic movement which remains unserviced and running  +23 seconds per day. We decided to keep unserviced to keep the watch as original as possible **Bracelet/Strap:** Stainless Steel 93150 bracelet with 588 endlinks which is in attractive condition and shows light signs of previous wear with no major distractions. The bracelet has little stretch. The bracelet is marked 1/76 correctly dating this bracelet to 1976. The Rolex crown logo on the clasp is sharp. The bracelet will fit an 8 inch wrist **Crystal:** Acrylic crystal with no distractions to mention **Accessories:** This watch comes watch only. It does not come with box or papers. Available for sale USD 35,500