Patek Steel Calatrava Ref. 3718, Made for 150th Anniversary

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Brand: Patek Philippe
Model: Calatrava
Reference: 3718A
Year: 1989
Material: Steel
Dial Color: Slate
Dimensions: 33 mm
Watch Movement: Manual-Wind
Bracelet/Strap: Black with Original Buckle
Box/Paper: Watch Only
Condition: Excellent Overall Condition, No Notable Signs of Wear
SKU: 205050

The story of this Calatrava begins in 1989, a year when Patek Philippe paused to reflect on 150 years of continuous watchmaking. The Calatrava line itself is the brands most classic expression, rooted in a philosophy of discreet elegance that dates back to the 1930s. For the 150th anniversary, Patek made something that feels quietly different from other celebratory models. The Ref. 3718 wasnt broadly distributed; it was produced in very limited numbers, reportedly under 500 pieces, and originally sold only in Japan. Unlike overtly branded anniversary editions, the tribute here is subtle, with a classic manual-wind movement and an engraved medallion on the case back noting Patek Philippe 1839-1989.

The case is a modest 33 millimeters in stainless steel, a material that has always been rare for Patek dress watches of this vintage. The choice of steel gives this watch a quiet versatility while preserving the refined proportions that collectors prize. On the wrist it feels true to the sensibilities of the era: restrained but purposeful. The slate dial on this example has a soft, almost muted presence that plays beautifully with light, and the contrast with the applied markers is just enough to read easily without drawing attention.

Inside, the watch is driven by a hand-wound movement, a mechanical heart that feels right for a piece born of horological heritage. It doesnt shout complexity; instead it invites appreciation of the fundamentals of fine watchmaking. The hands are slim and elegant, perfectly scaled to the dial, giving a timeless dress-watch aesthetic that honors Pateks history without trying too hard. On a simple black strap with the original buckle, this Calatrava reads as a discerning collectors watch first, a wearable artifact of an important anniversary second.

This particular piece is offered in excellent overall condition with few signs of wear. It feels like a bridge between eras: vintage in spirit, yet relevant today because of its purpose and provenance.

Please feel free to get in touch with any questions. The best way is to email us at hello@thekeystone.com or text/call (213) 632-9061

If you are interested in selling or trading your watch, please include as much information as possible, as well as photos. You may also email photos to hello@thekeystone.com 

When a watch is purchased, our watchmaker will perform a thorough inspection of the movement and perform a number of tests to ensure the watch is functioning in top condition before shipping. This process can take 7-10 business days. 

Once your watch is ready, watches shipped within the United States are sent via insured FedEx Overnight and will arrive the next day. We will send over tracking information once the watch ships. 

International shipping can take a number of days considering customs and travel. Straps made from exotic materials banned for import will be removed from the watch prior to shipping.

We know it can be difficult be completely certainly that a watch's condition, size or shape is what you are looking for. 

We provide a 5 day inspection period from delivery so that you may receive the watch and decide if it is right for you. 

This is not a trial period; our watches are well documented and any wear or damage will be deducted from the return amount. 

The Keystone offers a one-year warranty covering all mechanical aspects of the watch. This includes abnormal time keeping relative to the watches age, battery replacements and general mechanical issues inside the watch. Many of the watches we sell are vintage and thus may gain or lose more time than modern specifications. We reserve the right to use our discretion and experience to determine acceptable time keeping for vintage watches.

At The Keystone, we accept payment via Credit Card, Bank Transfer and major Cryptocurrency Coins. Please reach out via email with any questions about payment to Hello@thekeystone.com

Why Buy from The Keystone?

With a long track record of trust and smooth dealings, we have prioritized our relationships with our customers over individual sales. We know that our reputation is where we stand out from the rest and we strive to continue that tradition. We guarantee authenticity and remain available if you have any questions.

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