This vintage Rolex Sea-Dweller reference 1665 is presented in all-original condition and remains a highly respected example of Rolex’s professional dive watch heritage. Crafted in stainless steel, the case retains thick, sharp lugs and shows only minimal signs of wear, reflecting careful ownership over the years. All case numbers are crisp and fully intact, with a 6.1 million serial placing production around 1979. The original dial displays a beautifully even yellow patina across all hour markers, complemented by matching hands. The tritium lume remains responsive under UV light, confirming originality and consistency throughout. Completing the classic profile is the correct fat-font bezel insert, which has naturally faded to a soft grey tone and features a matching pearl pip, adding depth and character to the watch. The original Oyster bracelet is in excellent condition with 11 links and shows almost no stretch, which is exceptional for a piece of this age. Additional links can be provided upon request. The movement was professionally serviced in December 2025 and is running properly. This Sea-Dweller is accompanied by its original box and papers, making it a compelling and well-preserved example of a landmark Rolex tool watch. **Reference:** 1665 **Size:** 40mm **Year:** 1979 📜 Includes: Original box & papers 💵 Price: $20,900 + FREE overnight shipping with FedEx fully insured. [Timestamp](https://imgur.com/a/5p5OBEp) 🔗 Other Listings: [profile](https://www.reddit.com/u/BoghossianJewelry/s/vm81HAdB7o) | [watchrecon](https://www.watchrecon.com/?query=BoghossianJewelry&last_days=0) 🔥 Follow us on [Instagram](https://www.instagram.com/bogossiajewelers) 📍 Location: New York 🔒 Authenticity: 100% guaranteed, buy with confidence. We have 160+ reviews on Chrono24 with 180+ transactions, and Excellent rating score on Trustpilot. Visit our [profile](https://www.reddit.com/u/BoghossianJewelry/s/vm81HAdB7o) for links and references. 📦 Domestic Shipping: Ships with FedEx overnight, within 24 business hours of payment, from New York, NY to CONUS. The shipment is fully insured against damage, loss or theft. 🌍 International Shipping: Incurs an additional $100. 💳 Payment: Crypto (+2%), PayPal/CC (+4%), Web, or Face-to-face deal in NY. 🔐 [Seller References](https://bogossia.com/authenticity) 📸 [IG: @bogossiajewelers](https://www.instagram.com/bogossiajewelers)