Vintage Rolex Oyster Perpetual 'Bubbleback' (Likely Ref. 6050/6084)
Automatic Dress Watch / Tool Watch Hybrid · Rolex SA. An independent luxury Swiss manufacturer known for inventing the waterproof Oyster case and the Perpetual rotor.
Period: Mid-Century Modern (Late 1940s to Early 1950s). The design features characteristic tapered lugs and the 'Bubbleback' architecture optimized for early automatic rotors.
Type
Automatic Dress Watch / Tool Watch Hybrid
Brand
Rolex SA. An independent luxury Swiss manufacturer known for inventing the waterproof Oyster case and the Perpetual rotor.
Movement
Rolex Perpetual Automatic Caliber 620/630/645 series. Features a 'Super Balance', 18,000 vph frequency, and a 360-degree winding rotor. It is a COSC-certified Chronometer.
Dimensions
Case diameter: 32mm-34mm; Thickness: 12mm-14mm (high profile); Lug-to-lug: 39mm-40mm; Lug width: 17mm-19mm.
Description
This is a classic Rolex 'Bubbleback,' so named because the caseback was curved to accommodate the then-bulky automatic winding rotor. It represents the foundation of the modern Rolex Oyster Perpetual line. The movement side reveals the 'Perpetual' rotor with the iconic Rolex crown logo and 'Trigger Screw' patent markings, a hallmark of mid-century Swiss horology.
Key Features
Signature thick 'Bubbleback' profile; 'Rolex Perpetual Chronometer' engraved rotor; 'Vis Tirette' (setting lever screw) patent marks; drilled lug holes; tapered spade-style lugs.
Dial Description
Dial not visible (movements side shown). Typically features a matte eggshell or lacquer finish with applied gold indices and 'leaf' or 'dauphine' hands with radium lume.
Case Material
14k or 18k Yellow Gold or Gold-Capped Stainless Steel. The lugs show significant wear and a soft luster characteristic of solid gold or heavy gold capping from this era.
Crystal Type
Domed Acrylic / Plexiglass (Tropic style). Likely high-domed to accommodate the movement thickness.
Bezel Details
Fixed smooth bezel, integrated into the middle case. Appears to be polished yellow gold.
Crown & Pushers
Original Rolex 'Super Oyster' or earlier 'Oyster Patent' screw-down crown in yellow gold. Crown shows significant wear on the knurling.
Bracelet or Strap
Missing. Originally would have been paired with a leather strap or a riveted gold/two-tone Oyster bracelet.
Caseback Details
Exposed in image (opened). The caseback itself would be a deep 'bubble' shape, screw-down type, made of matching gold/steel with coin-edge ribbing for the Rolex case tool.
Movement Type
Rolex Perpetual Automatic Caliber 620/630/645 series. Features a 'Super Balance', 18,000 vph frequency, and a 360-degree winding rotor. It is a COSC-certified Chronometer.
Water Resistance
Originally 30-50m (Oyster Case). In current condition: Zero. Should be treated as non-water-resistant due to age and missing components.
Origin & Provenance
Swiss Made. Manufactured in Geneva/Bienne, Switzerland. Features an in-house Rolex caliber.
Age Estimate
Circa 1948–1953 based on the rotor engraving styles and the 'Vis Tirette' patent text on the movement plates.
Cultural Significance
Pioneered the automatic winding technology that is now industry standard. It transitioned the wrist watch from a fragile accessory to a durable 'tool' for everyday life.
Condition Notes
Fair to Poor. The case shows heavy scratches and possible over-polishing. The movement shows signs of oxidation/rust near the edges and screw heads. Missing caseback, strap, and likely requires a full overhaul. Overall condition: Fair (Project Grade).
Value Estimate
In current project condition: $800 - $1,500. Fully restored: $3,500 - $6,000 depending on the dial rarity and gold purity.
Care & Maintenance
Requires immediate professional service by a vintage specialist. Do not attempt to wind as old lubricants may have dried or turned into abrasive paste. Keep away from water as gaskets are likely perished.
Similar Watches
Omega Seamaster 'Bumper' Automatics (uses a hammer rotor instead of 360-degree); Tudor Oyster Prince (same case tech, ETA-based movement); Rolex Ref. 5030.
Interesting Facts
The 'Bubbleback' was Rolex's first commercially successful automatic watch. In the 1980s and 90s, these were the most collectible watches in the world, particularly in the Japanese market, sparking the modern vintage watch craze.