Miranda[PuristSPro Moderator]
6306
Patek Philippe: the lure of the steel complication
First I guess the disclaimer: I love Patek steel watches, maybe it's the rarity, or perhaps the fact that it's intrinsic value has nothing to do with gold or platinum , you could think of steel Patek's as the Purists Patek in that sense, well in my opinion anyway 
If steel is a rarity, imagine how rare steel complications are, especially from the golden age of vintage Patek. In our journey, we will see that today we are very spoilt when it comes to steel Patek complications.
So, in the beginning..... now imagine this, a perpetual calendar, with chronograph no less..... and from Patek, incredible, but true. The ref 1518 was made it is believed in steel in four pieces only:
so even if you have the necessary dollars,euro,franc or what ever the currency is of your flavour, getting one is still pretty much impossible..

Pic credit Forbes
But hey it does not stop there, Patek also made some unique pieces without chronograph, again achingly beautiful, look at them now, because this is probably the only way we mortals can ever get to see them,

pic credit Christies


There was also another piece unique in steel, I am not sure if they were special orders, or perhaps prototypes that were sold to the public

pic credit Sotheby's
It was nou just perpetuals that were being made in steel, but more readily accessible were the steel chronographs, ref 130 and 1463, more accessible does not of course mean readily available, these are rare birds by anyone's definition

Ref 1463 with rare Breguet dial

Ref 130
Now maybe these are too common for you, maybe you prefer a large case 35mm split second!

or maybe a unique medical steel chrono?

thats all folks......
well no, not quite, following the discontinuation of the 1463, there was no Patek steel complication. In fact I remember asking in the early 90's and was told that Patek would not make steel complications. But for what ever reason, and thankfully so, Patek certainly did make a steel complication. Now today we may mock this piece for it's design, (based on the 5080 Neptune, which was not a great success), BUT in the late 90's this was the ONLY steel Patek complication....the ref 5085/1a, no wonder then it was desirable. It was the first ever Patek to be manufactured in steel with a moon phase in serial production:

The 5085, gave to a monster, for the first ever, the Jumbo Nautilus had a complication with moon phase, behold the legendary 3712, retailed in UK for about £11,000, secondary market £17,000 (at the time of its release),
even today it is highly sought after

Of course the 3712, gave way for the 30th anniversary collection, the 5712 and for the first ever a Nautilus chronograph, the 5980 1/a. Both were highly desired, and this was the first time Patek offered a steel chrono since the 1463.
Today we have steel complications from the very high end of haute horology, the 5950 1/a, right through to the travel time 5164, and one of my favourite modern Patek the 5726
One of the seminal modern Patek has to be the ref 5004 perpetual calendar with split second chronograph. Highly desired and prized by collectors, I think Patek stunned us all with a special run of 50 pieces in steel: ahh if only I was a special one


The 5004a could be seen as the spiritual successor to the legendary 1518 steel. Alas, I would never have been chosen for this beast, but I would have gladly have sold every watch I own to get this.......
the 5726....a beautiful Steel complication:
The nautilus was further expanded last year with the technically brilliant 5990, chrono

and finally, a watch which I firmly believe will be a legend..... steel + chrono + annual calendar, in modern reiteration of the classic 1463.......what more can we want (yes I know, you want the bracelet off....well you can

)

PIC credit Purists
Hope you enjoyed this pictorial of Patek steel complications
please note: pics were either Christies/Sothebys, Patek here at Purists, or internet. I did not have the sources for all, but happy to acknowledge.
Best
Imran