Today’s offering showcases something that virtually never appears in the watch marketplace: a true, exceedingly rare untouched new-old-stock Patek Philippe men’s wristwatch, preserved exactly as it left the factory decades ago.

It is accompanied by its original hang tag and box, and its original factory case back sticker is stil perfectly intact on the case back. This is not merely a well-kept vintage Patek. The original factory caseback sticker remains perfectly intact on the back of the watch. The original hang tag is still present. The original Patek Philippe box accompanies it. Together, these elements place this watch in a category that most collectors will never encounter firsthand.

It's more than a barn find - it's like a finding a new, undriven car with only delivery miles on the odometer in a barn.

We aquired it from the son of the original owner. He said that his father had purchased it new and then, for reasons lost to time, chose to store it in a safe unworn. Year after year, decade after decade, it remained unworn - protected and undisturbed until now. The provenance matters explains what your eyes immediately see: untouched surfaces, uncompromised lines, and the almost surreal feeling of a vintage Patek that presents as if it never left the jeweler’s counter.

The result is a Patek Philippe that presents today exactly as it would have when first sold: sharp case lines, untouched surfaces, and a level of originality that cannot be recreated or restored. Once a watch like this is worn, that state is gone forever.

It is a very fine and handsome ref. 3503 square Gondolo.

The Gondolo line has long been one of Patek Philippe’s canvas for pure design. Where round dress watches often whisper, the Gondolo speaks in clean geometry: a rectilinear case, a dial reduced to the essentials, and balanced proportions.

For this reference, the aesthetic is all disciplined elegance - thin baton markers, slender hands, and a minimalist dial that lets the architecture of the watch do the talking. It’s the kind of restraint that only works when the details are done well.

Powering the watch is Patek Philippe’s ultra-thin hand-wound Calibre 175 - one of the movements that made pieces like this possible in the first place. This illustrious movement was awarded the prestigious "Geneve Quality Seal" and this example is stamped in two places with it.

The appeal of the Ref. 3503 is inseparable from that engineering: a case that sits close to the wrist, wears with effortless comfort, and delivers that unmistakable “ultra-thin” presence. It’s vintage Patek being refined - less about decoration, more about mastery.

We have timed it on a machine that simulates it being worn on the wrist. It is keeping very accurate time.

Thankfully, when other dealers and collectors asked the son who sold it to us to open it to see the inside, he wouldn't them. The only time that watch has every been opened since it left the factory is a single instance when the seller had it authenticated. Since the watch has never been serviced since the leaving the factory we chose not to service it, but we can if you would like - please inquire. We have also left the patina on it, which could easily be wiped off if desired.

The watch retains its unworn original strap and buckle, completing the full, correct “as-sold” presentation that collectors prize. The original factory caseback sticker remains intact, a detail that is typically removed within moments of purchase and almost never seen decades later.

As mentioned, accompanying the watch is its original hang tag and box. The watch was stored away in its box, so the box is in virtually perfect condition as well.

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

This example offers the exceedingly rare opportunity to experience a vintage Patek Philippe as if time itself paused the moment it was sold.

Manufacturer: Patek Philippe
Country of origin: Switzerland
Serial no. (per the tag): 1,167,273 it appears from the tag
Year built: c. the first half of the 1960's
Model: Ref. 3503
Functions: Hours and Minutes
Designed for: Men
Case material: 18K gold
Case condition: Unworn new-old-stock with the sticker still on the bag. No signs of handling wear.
Dimensions: 26.5mm wide (excluding crown), 32mm long lug tip-to-tip
Dial: Light silver, with black painted baton indexes, signed Patek Philippe and Swiss
Hands: Original, gold "batons"
Movement type: Extremely high grade, manually wound, Cal. 175, specially designed shock protection, stamped twice with the Geneva Quality Hallmark, rhodium-plated, fausses cttes decoration, 18 jewels, straight line lever escapement, Gyromax balance adjusted to heat, cold, isochronism and 5 positions, self-compensating flat balance spring
Jewels: 18 rubies
Band: Original, unworn Patek Philippe band and 18K Patek Phiippe
Width between lugs: 18mm
Serviced: None performed. The watch has never been opened. Please inquire if you would like it done.
Timing: We have timed it on a machine that simulates it being worn on the wrist. It is keeping very accurate time.
Warranty: 1-year international warranty. Please email concierge@cotwatches.com for details. 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 extremely experienced team of four Master Watchmakers all of whom each have over thirty-five years of experience and a large number of parts. One used to be the watchmaker for an authorized Rolex dealership and was given special training by Rolex at their Beverly Hills Service Center.
Box/Papers: BOX - Connoisseur of Time watch presentation box; PAPERS - Custom printed Connoisseur of Time Certificate of Authenticity
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