The Rolex Datejust 16233 featuring a blue dial, automatic movement, 18k gold and steel "Rolesor" case, and a Jubilee bracelet is one of the most celebrated and versatile luxury watches ever produced. Introduced in 1988 and manufactured until the mid-2000s, this reference serves as a "neo-vintage" icon, famously bridging classic vintage styling with modern daily-wear reliability.

• The Sapphire Advantage: The 16233 was among the first Datejust families to transition from easily scratched acrylic (plastic) crystals to modern scratch-resistant sapphire crystal, making it significantly more practical for everyday wear.

• The Workhorse Caliber 3135: Inside is the COSC-certified Caliber 3135 movement, highly regarded by watchmakers as one of the most reliable automatic movements ever built. It features a quickset function, allowing you to change the date by turning the crown without having to spin the hour hands past midnight repeatedly. 

• The Striking Blue Dial: While champagne is the most common dial configuration for two-tone models, the sunburst blue dial is rarer and highly sought after. The deep blue color offers a sharp, modern contrast against the warm tone of the 18k yellow gold bezel and bracelet links. 

• Era Variations: Depending on the specific year of production, you can find minor cosmetic changes. Models from 1988 to around 1997 feature Tritium luminous material on the dial (marked by "T Swiss T"), while post-1998 models use Luminova. Furthermore, late-90s and 2000s models moved away from "pierced" lug holes on the side of the steel case to smooth, solid case walls for a cleaner look.

• Case Size: 36mm

• Materials: Oystersteel and 18k yellow gold (Rolesor)

• Bezel: Fluted, 18k yellow gold

• Crystal: Scratch-resistant sapphire with a Cyclops magnifying lens over the date

• Movement: Automatic, in-house Rolex Caliber 3135

• Power Reserve: Approximately 48 hours

• Complications: Instantaneous quickset date, hacking/stop seconds

• Water Resistance: 100 meters (330 feet)

• Bracelet: Two-tone Jubilee five-link bracelet with a folding clasp