Thiswhite gold3941 is a piece that was originally offered alongside the 3940, and is distinguished by its open caseback. With its classic 36 mm size,and svelte profile matched by a slim micro-rotormovement that can be seen through the caseback, it is arguably one of most elegant offerings of the modern Patek Philippe era.

The Industry at A Juncture

Thereference 3940was introduced byPatek Philippein 1985, at acrucial juncture.The Swiss watch industry was still feeling the effects of not only the Quartz Crisis, but also a global economic downturn that resulted in massive downsizing for many watch brands, with some pivoting towards this new technology and some having to fold altogether.

However, rather than follow the wind, Philippe Stern, the CEO ofPatek Philippe, decided instead to double down on the brands heritage.Alongside its sister reference, the, the modelessentially kick-started the serial production of complicatedPatek Philippe watches. Prior to this, perpetual calendars were extremely scarce.

Thereference 3940decided to abandon the aesthetics cemented by previous references. The dial layout was revamped, with the day and month aperture being replaced with three sub-dials. The sharp lines were substituted for a smoother, more modern design. Powered by a much thinner movement, it enabled an elegant, slim case that fits tightly to the wrist.

The Elusive 3941

Whilst at first glance this may appear like a reference 3940, it is in fact the more elusive reference 3941.When the reference 3940 was first released in 1985, it featured a solid caseback,ashad nearly every Patek Philippe watch produced before it. However, Patek Philippe receivedfeedback from clients who wanted to admire themicro-rotor movement through an open caseback. In response, the manufacture released an entirely new reference - the 3941 - which was produced alongside the 3940, but with a display caseback, instead of a closed one.

These were amongst the first Patek Philippepieces to be deliveredwith an open caseback, making this decision all the more remarkable.In response to client demands, Patek Philippe began offering the reference 3940 with both solid and clear casebacks, and eventually discontinued the 3941 in 1990.Produced for a brief five year period, it is understood that the reference 3941 was available in yellow and white gold, with this being an example of the latter.

A Classic Design

The dial has three registers, with the various functions neatlylaid out. The sub-dial at three o'clock shows the leap-year counter and the months, in English, in a slightly concave sub-register, giving depth to the lightly-brushed, opaline dial. In a similar fashion, the months and 24-hour indicators are placed at nine o'clock.

The silver moon and stars for the moon-phase are placed at six o'clock, with the days of the month around it. The 24-hour and weekday indicator at 9 o'clock mirror those at 3 o'clock, bringing a sense of balance and uniformity, to this relatively small but highly complicated dial. Despite the modest size, the3941remains legible and easy to use. The dauphine hands add a touch of sharpness to what only can be described as a wonderfully balanced design.

Evidence suggests that the dials for reference 3941were produced byStern Frres, who provided many dials toPatek Philippeduring this period.As seen from the bevelled edges that hold the day and month indicators at three and nine oclock, the absence of the grave accent in GENEVE and the slightly larger Patek Philippe signature, this is a second series dial. From the cross divider that can be seen within the leap year indicator, it is evident that this falls within the late second series, made around 1989-1990, right before the reference was discontinued.

The Movement

Representing the best ofSwissdesign, the movement itself is no less a technical feat. Through the sapphire caseback, the fantastic hand-finishing speaks for itself, and the wearer is able to admire theGenevancoat of arms and stripes, as well as the off-center, 22k gold micro-rotor. The ultra-thin, self-winding 240 Q base movement has been used byPatek Philippesincethe 1970s and continues to beat at the heart of their modern perpetual lines.

The Set

ThisPatek PhilippePerpetual Calendar Ref. 3941G is accompanied by a bespoke anthracite grained leather strap, a black alligator Patek Philippe strap,and the corresponding white gold tang buckle.

If sold within the United Kingdom, thisPatek Philippe ref. 3941Gwill be subject to 20% VAT.

Closer look