Important Platinum Rolex Oyster Perpetual No Date on Auction at the Cote D‘Azur: Simply Beautiful

Lot 189 in the spring sale of Monaco Legend Group in April

Monaco Legend Group (MLG) is again offering a never seen before early Platinum Rolex Oyster Perpetual No Date during the upcoming spring sale on April 25^th and 26^th in Monaco. ‘What’s so special about a platinum Rolex?’ you may ask, given they are a frequent sight these days, everywhere people are able to afford. Let me try to explain what is so exciting about the timepiece!

‘Contemporaries’ in platinum: Rolex Oyster Perpetual Day-Date Ref. 228236 and Cosmograph Daytona Ref. 116506, ®Christies

To fully grasp, what makes the watch in the spring auction so special, it pays to go back a hundred years. The victory of the wristwatch over the pocket watch had just begun to unfold. No other maker sought to address the specific challenges of this watch type more diligently than Rolex. Movements were much smaller and thus more difficult to make. At the wrist the watches were exposed to the elements and often subject to sudden impacts.

Early Rolex Oysters and Oyster Perpetuals were supported based on their functional advantages while they were more difficult sell based on their design properties which were at odds with the appetite for smaller more delicate watches at the time. Oyster Perpetuals were additionally quite thick. The early Brand ambassadors were chosen to make robustness, precision and reliability under extreme conditions believable ©Rolex, Christies

Elegance and luxury initially took the backseat in favor of overcoming technical obstacles. Advertising featured athletes performing extreme sports like the channel swimmer Mercedes Gleitze and the speed record holder Sir Malcom Campbell. The watches themselves were rather thick for their time, given their ‘hermetic’ Oyster cases. That was especially true for the ‘Oyster Perpetual’ with its automatic rotor that nearly doubled the height of the movement. To alleviate the visual impact, case backs were domed, incurring the watches the nickname ‘Bubble Back’.

Early Oyster Perpetuals were adaptations of manually wound ‘Hunter’ calibers, fitted with the automatic winding mechanism, like caliber 710 with indirect sweep hand. The winding rotor increased the thickness of this movement from 4.25 to 8.45 millimeters. In 1955, the base caliber 1030 was introduced, which was designed as an automatic movement with integrated rotor from the onset, so that the height of the movement shrunk to 5.85 millimeters

Those, looking for an elegant Rolex wristwatch found it in the ‘Prince’ model, housed in a rectangular case that met the popular taste at the time. The Rolex Prince was a big success although it was introduced directly into the times of the ‘Great Depression’ and the succeeding years of economic peril. Many early watches were made of silver or ‘staybrite’ steel type alloys and the luxury version in gold was available in different carat weights. A few platinum Rolex Prince examples were made too and they usually receive a lot of attention when they appear at auction. They are the first platinum Rolexes known to exist.

The Rolex Prince was an elegant alternative to the Rolex Oyster and it was advertised behind high scale social events instead of extreme conditions. The illustrated example was produced in 1930, in the midst of the Great Depression. Sold May 2012 by Christies in Geneva for CHF 69 k, ®Christies

Scarcity and preciousness of the metal are just one reason why platinum watches are generally rare. The other reason is that the metal is more difficult to process than silver or gold. Technology was yet far behind today’s methods in the 1950’s, rendering it particularly difficult to produce complex designs like the screw down Oyster cases.

One of the earliest Rolex Day-Dates known to exist in platinum. Originally produced and delivered to the Middle East in 1958, it was auctioned by MLG in October 2025, where it sold for a total of € 533 k. ®MLG

It had long been assumed that it took until the end of the 1950’s before platinum was serially used for Rolex Oyster cases. ‘Serially’ meaning only for the top model Rolex Oyster Perpetual Day-Date that was introduced alongside the celebrations around the 75^th birthday of Rolex founder Hans Wilsdorf in 1956. Even then, just in a few examples that could have been delivered to the likes of the filthy rich oil magnates of the Middle East and elsewhere. The Platinum Rolex, the way we think of it today, was only conceived in the late 1960’s. The Day-Date has also never been a ‘Bubble Back’ since the movements of the first examples (Ref. 1055) were already derivatives of the modern 1030 base caliber introduced in 1955, thus allowing for a slimmer case profile.

Carefully honed design of the Rolex Perpetual Day-Date in platinum, model 18206 von 1989. These watches are magical. Despite their humble size of 36 millimeters and taken back looks, they turn heads wherever you take them. Sold for a total of 27.000 Swiss Francs in Geneva, November 2012, ®Christies

Still, it holds that there are few things that don’t exist and knowledge is never final when it comes to Rolex. When Auro Montanari aka John Goldberger released his ‘100 Superlative Rolex Watches’, the hearts of scholars were beating higher as he illustrates two Datejusts in platinum. One was produced in 1950 and seems to be unique as it is engraved ‘Rolex Jubilee, Custom Made, The Noblest of Metals’ to the back. But on the following page, there is another Datejust in platinum without such engravings, bearing the reference number 6304 (case 93910). It was made in 1955, hence a year before the introduction of the Day-Date. Both watches in the book still had Bubble Back type movements in a 36-millimeter case. In the spring of 2024, a second Datejust 6304 (case 102956) in platinum, nearly identical to the one described in the Goldberger book surfaced in the MLG auction catalogue. As sometimes happens, a third platinum watch came up in the fall of same year at Bonhams (Ref. 6304, case 101224). The watch at Bonhams had a black dial, very similar to the grey dials, with brilliant hour markers. However, the graphics were professionally redone with a more recent font type and it bore a Jubilee bracelet in rare white gold. Another indication that it was serviced by Rolex at some stage. None of these watches appear to be one-offs and all were produced in 1955.

One of three Rolex Oyster Perpetual Datejusts in platinum known so far, made in 1955. It seems the introduction of platinum happened with the then top model Datejust already and not only with the succeeding Day-Date, sold for € 735 k in April 2024 at Monaco Legend Auctions, ®MLG

The watch in this year’s spring auction is marked with the reference number 6304 too but it is not a Datejust. That alone makes it even more mysterious as back then as now, Rolex was not known to mistakenly put its movements into wrong cases. It could happen that case backs would be used for more than one reference, resulting in different numbers between the lugs and the case backs. Sometimes, the original number punched in the back would then be crossed out and the correct one would be engraved. In this case, the numbers match, however. Even assuming, a left-over movement was set into a left-over case, it is unclear why it would not be correct for the case band as the reference between the lugs is only engraved after the movement and case are united.

The reference numbers between the lugs and to the case back match up. The case back was punched, while the number between the lugs was engraved after the watch was completed, making mistakes unlikely, ®MLG

A more expected reference number might have been 6150, since this was the last Oyster Perpetual No Date in a 36-millimeter case. However, the dials of this (‘Pre Explorer’) model were often already printed ‘Explorer’ and it was discontinued when the first true Explorer reference 6350 was launched in 1953. The Explorer model turned into the last remaining time only Oyster Perpetual in a 36-millimeter case until the reference 116000 was released in 2008. After the introduction of the 1030 base caliber, the Oyster Perpetual no Date was initially reborn in a 34-millimeter case. That makes the platinum watch in the auction even more special, as it could easily be the last time-only Oyster Perpetual in a larger 36-millimeter case for over 50 years.

Extraordinary in every way: Rolex Oyster Perpetual no Date with Datejust model number in platinum with matching Jubilee bracelet in the spring sale of Monaco Legend Group, estimate € 500 k – 1 m, ®MLG

The Bubble Back type movement reference 745 of the watch is regulated to chronometer quality. Before the introduction of the 1030 base caliber, the dials were then printed ‘Officially Certified Chronometer’ (OCC). The Datejust 6605 and the golden versions of the GMT-Master 6542 were the first models to bear the inscription ‘Superlative Chronometer Officially Certified’ (SCOC) in 1956. So far, no watches with the old-style Bubble Back caliber 745/ A 296 and the updated SCOC on the dial had surfaced. As it was produced in 1955, it is also the earliest watch yet to bear the new inscription at all.

‚Superlative‘ was only introduced as a standard after the introduction of the 1030 caliber, making this watch the only ‘SCOC ' with Bubble Back movement known to date

To this day, there has not been a Rolex Oyster Perpetual No Date in Platinum in the Rolex catalogue, further enhancing the importance of the timepiece. Those who don’t get put off by the brilliant hour markers can enjoy the otherwise puristic looks of the watch that is very wearable even today, thanks to its larger 36-millimeter case. The smooth, polished bezel and the nice grey shade of the dial are design elements, that became standards for platinum watches later. It’s wonderful Jubilee bracelet is remarkable in itself, as platinum was later limited to the Day-Date model, that was famously delivered with President bracelets.

Looking at the pictures released by MLG, the watch seems to be in a very good shape, as confirmed by the lot notes. Furthermore, the ‘original family ownership’ provenance is pointed out. However, the important question of the original point of purchase remains unanswered.

The Datejust ref. 6304 in platinum that was auctioned in 2024 had the ‘Serpico Y Laino’ dealer signature on the dial, hence it was bought in Caracas, Venezuela. It was auctioned for a total of € 735 k back then, meaning the current Oyster Perpetual No Date in platinum is priced to sell. However, I must admit that the Bonhams example escaped my attention until after it was already sold. At the achieved price of GBP 51.200, I would have been among the bidders for sure, despite its refinished dial and the bracelet in white gold. The bracelet could easily sell for GBP 10.000 by itself!