Important Modern & Vintage Timepieces
Hong Kong, Nov 30, 2025
LOT 356
ROLEX, REF. 5100, DATEJUST OYSTERQUARTZ, “TEXANO”, BETA 21, 18K WHITE GOLD
HKD 380,000 - 500,000
EUR 42,300 - 56,000 / CHF 39,500 - 52,000 / USD 49,000 - 65,000 / JPY 7,540,000 - 9,920,000
A extremely rare, unusual, quartz, 18K white gold wristwatch with quick set date, center seconds and integrated bracelet, NO.185.
| Grading System | |
|---|---|
Grade: |
|
Case: 2-8 |
Very good Slightly scratched |
Movement: 2* |
|
Dial: 2-6-01 |
Very good Slightly oxidized HANDS Original |
Brand Rolex
Model Datejust Oysterquartz
Reference 5100
Year circa 1970-1972
Movement No. 00008835
Case No. 185
Bracelet Rolex 18K white gold integrated bracelet, with Rolex 18K white gold deployant clasp, total length approx. 165mm.
Diameter 38.5 mm.
Caliber Beta 21
Weight 208gr. (approx.)
Signature dial, case and movement
Notes
Property of an Important Watch Collector
Antiquorum is proud to present the Rolex Reference 5100 in 18K white gold, featuring the groundbreaking Beta 21 movement. This exceptional timepiece, numbered 185, represents one of the rarest and most significant chapters in Rolex’s technological evolution. Produced between 1970-1972 in an extremely limited quantity, this white gold variant is exceptionally rare, with only a small fraction of the total 1,000 pieces production crafted in this precious metal. The majority were made in yellow gold, making this white gold example a true collector’s prize. What makes this particular auction piece remarkable is its historical significance as Rolex’s first venture into quartz technology. The Beta 21 movement represented Switzerland’s response to the quartz revolution, developed by a consortium of 21 Swiss watchmakers (CEH) determined to compete with emerging Japanese technology. The watch’s distinctive 38.5mm angular case and integrated bracelet design were revolutionary for Rolex, showcasing a bold aesthetic departure that some collectors believe may have been influenced by the legendary designer Gerald Genta. The integrated 18K white gold bracelet creating a seamless, sophisticated appearance. This reference also introduced several Rolex firsts: it was the first Rolex to feature a sapphire crystal and the first to incorporate a quick-set date function, and the first model engraved the limited number on the case . These innovations, combined with its quartz accuracy, made it the most technologically advanced and expensive Rolex of its era. Despite its brief production period,this Reference 5100 represents a pivotal moment in horological history—the intersection of traditional Swiss craftsmanship with emerging quartz technology. For the serious collector, this white gold example offers an exceptional opportunity to acquire one of the rarest and most distinctive Rolex models ever created.
Antiquorum is proud to present the Rolex Reference 5100 in 18K white gold, featuring the groundbreaking Beta 21 movement. This exceptional timepiece, numbered 185, represents one of the rarest and most significant chapters in Rolex’s technological evolution. Produced between 1970-1972 in an extremely limited quantity, this white gold variant is exceptionally rare, with only a small fraction of the total 1,000 pieces production crafted in this precious metal. The majority were made in yellow gold, making this white gold example a true collector’s prize. What makes this particular auction piece remarkable is its historical significance as Rolex’s first venture into quartz technology. The Beta 21 movement represented Switzerland’s response to the quartz revolution, developed by a consortium of 21 Swiss watchmakers (CEH) determined to compete with emerging Japanese technology. The watch’s distinctive 38.5mm angular case and integrated bracelet design were revolutionary for Rolex, showcasing a bold aesthetic departure that some collectors believe may have been influenced by the legendary designer Gerald Genta. The integrated 18K white gold bracelet creating a seamless, sophisticated appearance. This reference also introduced several Rolex firsts: it was the first Rolex to feature a sapphire crystal and the first to incorporate a quick-set date function, and the first model engraved the limited number on the case . These innovations, combined with its quartz accuracy, made it the most technologically advanced and expensive Rolex of its era. Despite its brief production period,this Reference 5100 represents a pivotal moment in horological history—the intersection of traditional Swiss craftsmanship with emerging quartz technology. For the serious collector, this white gold example offers an exceptional opportunity to acquire one of the rarest and most distinctive Rolex models ever created.