Today's offering showcases this fine and uncommmon early Rolex Oyster, made while the company was building its early Oyster line.

Built only a little over a decade after the creation of very first Oyster in 1926, this watch features an original early Oyster case and Rolex chronometer movement. It has a wonderful "railroad dial" with Art Deco Breguet style numerals and blued steel "moderne" hands.

Powering the watch is its original Rolex "hunter" handwound movement timed to six positions.

During this period, after assembly and testing, Rolex labeled their best performing movements with a "Prima designation." This designation then had three levels - Prima, Extra Prima, or Ultra Prima. The rare high-grade Rolex offered here is a rare example designated "Ultra Prima", the highest classification, and it is labeled as an observatory chronometer.

Originally intended for men, this boys size watch measures 29mm wide excluding the crown.

It is fully Rolex down to its crown and original hands and still retains its serial number stamped on the back.

Its fabulous dial presents in excellent condition. Its case is honest, with indentions in the soft 18K back. Both the bezel and case back that form the top and bottom of the "Oyster" screw down well.

One of our watchmakers has disassembled it down to its last screw and cleaned and oiled it. For the finishing touch we have equipped it with a brand new leather strap making it ready for immediate enjoyment.

Included with the purchase is a one-year C.O.T. international warranty on the movement and its function, a full-page custom printed Connoisseur of Time Certificate of Authenticity, and a new timing certificate.

• Manufacturer: Rolex
• Country of origin: Switzerland
• Serial no: 42,802
• Year built: c. 1937
• Functions: Hours, Minutes, Subsidiary Seconds
• Designed for: Originally designed for men; considered a boys size watch.
• Case material: 18K gold
• Case markings (inside): R.W.C., Oyster Watch Co., much patent information, 9K, .375
• Case condition: Honest original condition. Has light wear and the case back has a few indentions. The wrench grooves, which tend to wear heavily, still have a fairly strong profile. Not recently polished. It presents nicely on the wrist.
• Crown: Rolex Twinlock, later period, screws down well
• Dial: Silver, signed Rolex Oyster, luminous Arabic numerals, railroad minute track, very nicely done previous restoration
• Dimensions: 29mm wide (excluding crown) by 35mm long
• Hands: Original, blue steel "modernes"
• Movement type: Rolex hunter, manually wound, nickel finished, correctly signed, 18 jewel lever movement with Breguet overcoil hairspring, index regulator
• Movement markings: Rolex Chronometer, Timed 6 Positions, 18 Rubies, Ultra Prima
• Band: Hirsch diamond calf, designed for watches like this with fixed band attachments, remborde, brand new and unworn
• Width between lugs: 17mm
• Crystal type: Acrylic, excellent condition
• Serviced: One of our watchmakers has disassembled it down to its last screw and cleaned and oiled it making it ready for immediate enjoyment.
• Timing: Timed to precision on a state-of-the-art computerized system. Your watch is important to us, and we will take care of it for its lifetime. We provide the best after sale care in the business with an experienced team of watchmakers both of whom each have over forty years of experience and a large number of parts.
• Warranty: 1-year warranty. Please email concierge@cotwatches.com for details.
• Box/Papers: BOX - Connoisseur of Time watch presentation box; PAPERS - Connoisseur of Time Certificate of Authenticity; New timing certificate
• Returns: 7 days full refund. 100% satisfaction guarantee

We offer a 100% satisfaction guarantee for all of our watches. If you are in any way unsatisfied with the watch we will fully refund the purchase price anytime within 7 days after the watch has been received. Our goal is to exceed our client's expectations throughout the buying experience.

All watches are packaged carefully and mailed double boxed in specially constructed, reinforced shipping boxes designed for high value items. All watches are sent fully insured with signature required. Most of our domestic shipping is done through FedEx. At times we will also use USPS Express Mail, and we can accommodate most requests for your preferred carrier. International shipments are sent USPS International Express Mail or FedEx.

The purchase price will be the declared value of the merchandise on any required customs forms. The payment of all customs duties, tariffs, and taxes are the responsibility of the buyer.

Also note that water resistance of vintage watches can no longer be guaranteed and is not covered under the watch's warranty. We do not recommend getting a vintage watch wet, even one that was originally designed to be waterproof.

To get an idea of how this watch will look on the wrist, please use the Watch Sizing Guide