Patek Philippe Nautilus 3712 vs. 5712 Comparison

dr.kol · 2012-04-09T14:57:20Z

Compare Patek Philippe Nautilus 3712 vs. 5712. Explore case construction, crown, dimensions, and dial differences in this detailed reference guide.

dr.kol

WPS member · Patek Philippe forum

3 replies19812 views3 photos

Dr.kol provides an in-depth comparison between the Patek Philippe Nautilus Ref. 3712 and Ref. 5712, drawing on detailed diagrams and side-by-side photos. His analysis focuses on the distinct case constructions—Gerald Genta's original two-part design for the 3712 versus the multi-part, more traditional case of the 5712—and highlights other subtle yet significant differences between these highly sought-after Nautilus models.

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Back to the topic... I could not find the material I got from Patek in Geneva. The enclosed pictures I took from a relatively new book Collecting Nautilus and Modern Patek Philippe Wristwatches" by Osvaldo & Patrizzi. I can recommend the book to the interested ones even it's costing as much as the service of a Calatrava.

Anyhow, I have many times emphasized that 3712 is having a case made of two parts. This is the original design of Mr. Gerald Genta. Here is the drawing of the case. It looks very simple but it is not cheap to produce.

In the case of 5712 there are much more parts. It is cheaper to construct and it is much closer to the traditional case construction than Genta's original design. The construction looks as follows:

Next the watches side-by-side. The older model 3712 is on the left and 5712 on the right. If you watch the picture carefully, you will start to see the differences:

The main differences listed:

3712 5712

Crown Push-down Screw-down

Case width 42 mm 43 mm

Case thickness 8.37 mm 8.52 mm

Case at 3 and 9 o'clock straight shaped

Direction of the date numbers same as reading direction partly upside down

7 o'clock marker present missing

6 o'clock marker rectangular rounded off

hands heavier slimmer

center links of bracelet more rounded more square

I had an opportunity to compare my 3712 with a new 5712 and the feeling of the bracelet of 3712 was more sophisticated and comfortable. But that is just a matter of taste.

The two watches share the same movement and they look very similar. But thanks to the case construction, for me they are two different watches.

Best, Kari

About the IWC Portuguese Chronograph Ref. 3712

The IWC Portuguese Chronograph reference 3712 represents the brand's approach to classical chronograph design within the Portuguese collection. This reference features a blue dial configuration and positions itself as a dress chronograph option within IWC's offerings.

The 40.9mm stainless steel case houses an automatic movement and is fitted with sapphire crystal. The fixed bezel maintains clean lines consistent with the Portuguese aesthetic, while the watch provides 30 meters of water resistance. The blue dial serves as the defining visual characteristic of this particular reference within the chronograph series.

Reference 3712 appeals to collectors seeking a refined chronograph with contemporary sizing and automatic functionality. The stainless steel construction and blue dial combination offers accessibility within the Portuguese chronograph range, making it suitable for those wanting IWC's chronograph capabilities in a versatile package that balances sporting function with dress watch sensibilities.

Specifications

Caliber: 79350

Case: Stainless steel

Diameter: 40.9 mm

Dial: Blue

Water Resist.: 30m

Crystal: Sapphire

Key Points from the Discussion

The Patek Philippe Nautilus Ref. 3712's two-part case construction is considered more faithful to Gerald Genta's original design, which is a key factor for collectors prioritizing 'originality' over rarity.
Beyond the main differences, there are subtle variations in the seconds sub-dial, power reserve dial, and hour markers between the 3712 and 5712.
The Patek Philippe Nautilus Ref. 5712 features a larger date wheel font, which improves legibility, and a larger crown, addressing a common frustration with the smaller crown on the 3712 and other original Nautilus versions.
While some collectors might prefer the 3712 due to its rarity, the case construction and adherence to Genta's original vision are often more significant factors.

The Discussion

tahoeblue

Apr 9, 2012

Overall I prefer the 3712,

maybe due to its rarity (though that seems to make little sense). You have however missed 2 details which I find preferable on the 5712. First the font on the date wheel is larger, therefore easier to read. Second, the crown is larger on the 5712. The small crown is a bit frustrating on the 3712 and the other "original" Nautilus versions.

dr.kol

Apr 9, 2012

Thank you for your comments,

I did not even try to make a complete list. There are also some small differences on the seconds sub-dial, power reserve dial, the hour markers are also a little bit different, etc. I don't care which version is rare and which one not. The rarity can only influence to the resale price and I will not sell my 3712. What counts for me is the case construction and the "originality" of 3712. However, if I would own a 5712, I would wear it with great pleasure. Best, Kari

ArthurSG

Apr 9, 2012

Great comparo Kari! Thanks for this.

The devil is indeed in the detail. I start to see why you love your 3712.