The Tudor ‘Big Block’

In 1970 Tudor entered the chronograph market with a watch that was very different from its Rolex Daytona brethren – The two incarnations of the ’Monte-Carlo’ were bold, bright and colourful and occupied their own place in the Rolex family lineup, as a slightly inferior model to the Daytona.

Then in 1976 there was a shift and the ‘Big Blocks’ were born. Far from establishing a point of difference from the Rolex Daytona by continuing with the ‘fun’ slightly ‘junior’ theme, Tudor made a watch that was similar to the Daytona and in one key way, actually superior….

As well as toning down the colour palette and producing monochrome chronographs (although exotic-dialed 9000-series ‘Big Block Monte Carlos’ were made), Tudor adopted the Valjoux 7750 movement, not only adding an extra chrono sub dial but also a quick set date and an automatic movement. This automatic movement made the Big Block the first self-winding chronographs from the Rolex group – it would take Rolex themselves well over ten years to make an automatic Daytona and 25 years to make one with an in house movement.

As well as an advanced set of features, the Valjoux movement brought with it the necessity for a deeper case than its predecessors to house the self-winding mechanism and rotor, hence the nickname “Big Block”.

The first Big Blocks were the 9400’s consisting of three references that gave the option of three different bezels:

  • 9420 with an acrylic tachymeter bezel
  • 9421 with a 12-hour calibrated rotating bezel
  • 9430 with a steel tachymeter bezel

In the late 1980’s, the 9400 series was replaced by the 79100 series of Big Blocks and again, there were three references with three bezel types:

  • 79160 with a black plastic tachymeter bezel
  • 79170 with a black graduated 12-hour rotating bezel;
  • 79180 with a steel tachymeter bezel.

By the mid 1990’s Montres TUDOR S.A. was 50 years old and they started to made decisive moves to differentiate themselves from their Rolex brothers. As a consequence the direct references to Rolex were steadily disappearing from the cases, winding crowns and bracelets of Tudor watches to be replaced with own brand alternatives and the day of the Big Block was over.

An important watch and often overlooked, the Big Blocks are one to watch that’s for sure

The Rolex Explorer II 16570

Rolex have made several versions of the Explorer II since its launch fifty years ago but here we are mainly concerned with The Rolex Explorer II 16570. We will cover other references but this blog is designed to help you understand why you really should be considering a 16570.

When I first thought of writing this blog piece in the autumn of 2020, the Rolex Explorer II 16570 was one of the most overlooked and undervalued of all modern Rolex sports watches. A few months later I realised that the correction had already begun so I thought I had better get on with the piece

The Rolex Explorer II 1655 – 1971-1984

So firstly, let’s deal with this ‘Steve McQueen’ thing. The first incarnation of the Explorer II was the 1655 and at some time after its launch in 1971, it gained the nickname ‘Steve McQueen’. As no photo has ever come to light of ‘The King of Cool’ actually wearing a 1655 (he was a 5512 man), the reason why remains a mystery.

However, here are a few things that we do know about the 1655:

  • It was launched in 1971
  • It was designed mainly for cavers or ‘spelunkers’, hence the massive luminous GMT hand that told you not only the hour but splits of 2 1/2 minutes too, even in the dark.
  • Unlike the Submariners of the time, the Explorer II had a 39mm case.
  • Despite having the same movement as the GMT Master, a pattern that continued until 2011, the 1655 only told the time in one time zone. The ‘GMT’ hand was fixed with the hour hand so it told the same time, just REALLY clearly.
  • Its other nickname is ‘Freccione’ from the Italian word ‘Freccia’ meaning ‘arrow’.
  • Production was discontinued in 1984
  • There were five different dial variations over the 13 year production run
  • It was a popular watch in Germany and the USA but apart from that it was thought a bit of an ugly duckling and sales were disappointing (Great news for collectors and those who have had them from new….)

The Rolex Explorer II 16550 – 1984-1989The 16550 is what the watch world refers to as a ‘transitional model’ although to be honest, I’m not sure that the description really fits the bill. While it wasn’t made for very long in Rolex terms, it was made for almost five years so that’s not really a transition.

The thing that makes the 16550 particularly interesting is the dial – for the first time the Explorer II was available with the option of either a black or white dial and while the black dials were fine, the white ones were nearly always faulty. Instead of staying a lovely bright white as Rolex intended, most of them turned a creamy colour, giving them the nickname ‘Panna’ (Cream in Italian). A LOT of these have been replaced by Rolex with lovely shiny white ones, making the remaining cream ones highly collectible and valuable.

There are also some ‘Rail Dial’ examples out there – a Rail Dial is one where the words “Superlative Chronometer Officially Certified” line up perfectly with an even gap through the middle – like train tracks. These are rarer still and command a higher price.

The hands were changed from the ‘unusual’ design of the 1655 to the more ‘normal’ Mercedes style and this helped to create a look that was more acceptable to the masses.

Again using the GMT Master movement, this time the 3085 from the 16760, the 16550 now had an independent GMT hand so that it was a two time zone watch. The case was made from 316L steel as was the norm in the day and this makes it slightly less bright than the later models – the cases were also made slightly fatter than the later ones to accommodate the 3085 movement.

By the end of the 1990’s Rolex had a new movement and were working with improved 904L steel so they took the opportunity to fix the dial issues and launch a new model.

The Rolex Explorer II 16570 – 1989-2011

This is where things get interesting and lead us to the purpose of the piece that I alluded to way up there in the introduction.

The Rolex Explorer II 16570 is a very similar watch to the 16550. It has a slightly slimmer case that’s made from a different type of steel and an improved movement but apart from that it’s basically the same watch but less than half the price and that’s a situation that’s unlikely to last for long.

16550s aren’t going to get any cheaper so when the price gap closes, and it will, it will happen through an increase in the price of the 16570.

So, there are four main types of 16570, all available with either a black or white dial:

  • 1989 to 1998 Tritium dial – expect to pay between £9,000 and £12,000. These are the early watches and prices have already risen alot recently – there’s lots more room yet though.
  • 1998 to 1999 Swiss only dial – expect to pay between £8,000 and £10,000. These are the rarest of all Explorer IIs and again, prices are rising sharply.
  • 1999 to 2007 Swiss made dial with 3185 movement – expect to pay between £8,500 and £10,000. These are the bulk of 16570s as production numbers were higher in the 2000s and they were made for eight years.
  • 2008 to 2009 Swiss made dial with 3186 movement – expect to pay between £10,000 and £12,000. These watches have the updated GMT movement and engraved rehaut and are sought after by those who like the most recent versions of things.

The Rolex Explorer II 216570 – 2011 to date.

Also available with both black and white dials like the 16550 and 16570, the 216570 is something of a fusion of old and new.

The 216570 still has the fixed bezel that Explorer IIs have always had and now they have brought back the oversized orange ‘GMT’ hand – so that’s the old. The new is that the GMT hand moves independently and the case size has been increased to 42mm in keeping with modern tastes.

This brings us to the statement made at the beginning of the piece about how the Explorer II 16570 is a classic, appreciating asset.

You see, the 1655 isn’t to everyone’s taste, it’s properly vintage and it’s priced well out of most people’s reach.

In January 2022, a nice 1655 Full Set will set you back something north of £20,000

In its original Panna form, a Full Set 16550 Rail Dial costs over £25,000 these days and even a nice Full Set Polar with a replacement dial can be £17,000 or so (admittedly, black ones are less) and prices are still rising.

Prices of the last 16570s made with the engraved rehaut and the 3186 movement have risen sharply too but the ‘standard’ 16570s, whether Tritium or Superluminova are still great value – it won’t last long though as these things have a way of correcting themselves so if you fancy one then my advice would be not to hang about….

To see the Rolex watches in our current collection click here and you can see the current range of new Rolex watches here.

Rolex Milgauss RIP 1954 – 2023

Where it all began ….

As we say goodbye to the Rolex Milgauss for good, we thought we’d take a look at the history of this impressive timepiece, that was so much more than just a watch.

Invented in 1954, the Milgauss was the solution to a fundamental issue for scientists at CERN – the European organisation for Nuclear Research.

In the early 1950’s, when the Large Hadron Collider wasn’t even a twinkle in its founders’ eyes, the scientists at CERN in Meyrin, Switzerland found that they had something of a problem. It was many years before the invention of the quartz movement so all of the scientists wore mechanical wrist watches. The accuracy of their watches was of paramount importance, because of the degrees of technical precision that they were working to every day. The problem that they experienced was that the massive magnetic fields that they were working in wreaked havoc with their all-important timepieces.

As some of you may have discovered with your own mechanical wrist watches, they do not like magnetism, and exposure to any magnetic field at all can make them run erratically or even stop altogether.

So, in 1954 the clever chaps at CERN approached their neighbours at Rolex in Geneva to fix the problem, which they duly did.

Magnetism & Milgauss

There are many compounds in the world that are not susceptible to magnetism, but one of the most effective is soft iron. Since 1836 scientists had been protecting delicate instrumentation from magnetism in a soft iron box called a Faraday Cage and so that is exactly what Rolex did with an automatic watch movement.

In 1954, Rolex built a tiny Faraday Cage and encased their 1065 automatic movement in it, (adding the subscript “M”) and creating the first Rolex Milgauss – reference 6543. The name ‘Milgauss’ derives from the Latin ‘Mille Gauss’ – ‘Mille’ meaning 1000 and ‘Gauss’ being the measurement of the strength of a magnetic field. So while automatic watch movements can be adversely affected by magnetic fields as low as 50 Gauss, Rolex’ new creation protected them from magnetic fields up to 1000 Gauss strong.

1954 – 1961: The Rolex Milgauss Exploration Years

 

After only two years the 6543 was replaced in 1956 by the updated reference 6541 – why they went backwards with the reference numbers rather than forwards is anybody’s guess. The 6541 had the newer 1066M movement along with other styling improvements. The 6541 was a classic piece of 1950’s styling, borrowing heavily from different influences of the day.

The dial featured a waffle texture which was popular on the dress watches of such brands as Omega and Rolex in the 1940’s and 50’s. The rotating bezel had an insert made of aluminium featuring a red triangle at 12 o’clock, borrowed from the styling of Rolex’ own Submariners, first released only two years before. It was the seconds hand however that tapped most heavily into popular culture. The 1950’s was a time of exploration, development and comic book adventure, and the lightning bolt shape of the Milgauss’ seconds hand was a nod to this while being particularly relevant to the work of the scientists at CERN.

The 6541 was undeniably a masterpiece of technical development and 1950’s design and this has subsequently been recognised. In 2023, an original early example of a 6541 would be valued in excess of £200,000.

However, in the 1950’s, its 37 mm case was considered by many to be too large and the styling too ‘industrial’ and so retail sales were relatively poor, even though the similarly sized Submariner was more of a success.

After a production run of seven years covering both references, the original design Milgauss was discontinued in 1961, to be replaced by the much more understated reference 1019.

1961 – 1986: Rolex Milgauss Lightning Strikes

 

The Rolex Milgauss 1019 featured either a plain black or aluminium dial, later a white option was added, and a fixed, smooth steel bezel. The iconic lightning bolt seconds hand was also replaced in favour of a more elegant, slim straight design.

While the 1019 Milgauss remained in production in various formats for 25 years, it was never a particularly popular watch with retail customers. At the end of the 1960’s and early 1970’s, demand was so low, that orders were saved up, and the watches were produced when sufficient numbers were reached. This is why you will see 1019 Milgauss’ from 1968 and 1970, but not from 1967 or 1969 as there just wasn’t sufficient demand to make them in those years.

Of course as is always the case with Rolex watches, a lack of popularity when new causes low production numbers and even lower numbers of exceptional examples 50 years down the line. This makes a great early 1019 genuinely scarce and therefore valuable with 1960’s Full Set prices in excess of £35,000.

In 1986, Rolex called it a day and the Milgauss was dropped from their catalogue forever.

2007: Rolex Milgauss Re-invention (again)

 

Or so it seemed until 2007 when the company was looking for a new and exciting way to rejuvenate their catalogue with a hint towards their expansive history.

The new Rolex Milgauss reference 16400 was a spectacular watch with a 40mm stainless steel case, fixed, smooth stainless steel bezel and dials in either black or white with orange accents. The 116400 also saw the revival of the lightning seconds hand from the 6541, this time in a bright orange colour. The pièce de résistance of the range was the Anniversary model 116400 GV which featured a black dial with a green tinted sapphire crystal (The ‘GV’ stood for ‘Glace Verte’).

The 116400 GV was immediately successful and quickly became the favourite watch of Daniel Craig, at the time the new James Bond, which undoubtedly did no harm whatsoever for the popularity of the model.

After only six years, Rolex discontinued the black dialled version of the Milgauss. A year later in 2014, it was replaced by a blue dialled version with the green sapphire crystal, the 116400 GVZ.

For two years there were three models in the Rolex Milgauss range; the white, the GV and the GVZ, but in 2016, the white was discontinued, leaving only the green glass versions in the lineup.

2023 – RIP Rolex Milgauss

This brings us to March 27, 2023, the saddest day for Rolex Milgauss lovers since 1986. This was the day that Rolex announced the discontinuation of the 116400 GV and the 116400 GVZ , erasing the Milgauss from the Rolex catalogue completely.

So what does that mean for the availability and value of the 116400 models?

Usually when Rolex discontinue a watch completely, it has an immediate and positive effect on both demand and price and in this, the Milgauss is no exception.

What’s Next

As I write, in the week since the model was cancelled, the availability of truly excellent examples here in the UK has fallen by almost 50% and prices have risen by around 10%.

Even after the recent price rise you can still buy an exceptional example of any of the four discontinued Milgauss models for less than £11,500. For a discontinued 40mm stainless steel sports Rolex Full Set in outstanding condition, this represents superb value.

As regular readers will know, I’m a great believer in the power of supply and demand and with this watch the supply is now fixed as they have made all of the 116400s that they will ever make.

Truly outstanding examples make up a fairly small proportion of these, and as demand continues to rise and supply is fixed, if not falling, that leaves only one direction for the price to go. Up.
April 2023 is a great time to buy an excellent example of this beautiful Rolex sports watch before prices rise further.

Luckily for Oakleigh Watches readers, we just happen to have outstanding Full Set examples of all four variants in stock.

Check the Collection Pages regularly for new listings or email me direct for more details.