Today's offering showcases this beautiful example of one of the company's classic vintage Calatrava with calendar and extremely fine automatic movement.

Powered by an illustrious Patek Philippe caliber 28-255C automatic movement, the company's ultra-thin automatic mechanism and one of its most beautiful movements, the watch excels in technical merits. Obvious even to the casual observer how much it was crafted and finished with great care, it was awarded the prestigious "Geneve Quality Seal".

Besides employing a superior mechanism, this Calatrava also features a classically elegant case and complementary original "Milanese" Patek bracelet.

The striking royal blue dial is double signed Beyer.

The watch is all original and in gorgeous condition. It is clearly been worn little and treated with an appreciation for its quality and value.

The dial is untouched and mint to the naked eye. The brushed case is also mint. And the bracelet presents as just short of mint with very slight twisting.

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

A very handsome watch in superior condition that can be worn daily or just for special occasions.

• Manufacturer: Patek Philippe
• Country of origin: Switzerland
• Serial no.: 1,306,883
• Year built: c. 1980's
• Model: Ref. 3601-1
• Functions: Hours, Minutes, Automatic, Date
• Designed for: Men
• Case material: 18K white gold
• Case condition: Mint
• Dial: Royal blue, white gold baton indexes, signed Patek Philippe, GENEVE, and BEYER, original, just short of perfect mint condition under magnification - appears mint to the naked eye
• Hands: Original white gold faceted dauphines
• Movement type: High grade cal. 28-255 C, stamped with the Geneva Quality Hall-mark, rhodium-plated, 36 jewels, straight line lever escapement, Gyromax balance, adjusted to heat, cold, isochronism and 5 positions, shock-absorber, self-compensating free-sprung flat balance-spring
• Movement markings: Patek Philippe & Co., Geneve, Adjusted to Heat, Cold, Isochronism, 5 Positions, Thirty Six Jewels, 28-255, stamped with the Geneva Quality Mark
• Jewels: 36 rubies
• Band: Original 18K white gold integrated bracelet by Patek Philippe, three size settings for adjusting the length, sized to fit a wrist of approx. 7 3/4 on largest setting, just short of mint condition with light twisting. If needed the length can be altered by a jeweler.
• Crystal: Sapphire, mint condition
• Timed: Timed to precision on a state-of-the-art computerized system
• Warranty: 1-year warranty. Please email concierge@cotwatches.com for details.
• Box/Papers: BOX - Connoisseur of Time watch presentation box; PAPERS - Custom printed 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