Is it a super oyster? or a Coronet with a Cross below it? Reference number is 6098! Thanks in advance!

And even before that on typewriter paper.

I do not know if this would be considered correct, but I do have a 6098 with a screw down crown.

I have the Rolex instructions stating that Super Oyster crown models should be sent to new york to be fitted with 600 crowns.

...about that is that it further establishes precedent for Rolex's procedure on recalls (at least in the USA), even if they were never really made public and were excluisvely between Rolex and their dealer network.
So Rolex discovered there were technical problems with the Super Oyster and they put the word out to their delaers to make it official policy to return all Super Oyster watches they could get their hands on to make a fix--you (Tommy) have the documentation to prove this.
The fact that there are still Super Oyster crowns on some of these models today proves that despite their desire to make the fix, this was an inefficient method of recall, but one that probably suited Rolex's PR needs at the time better than a public call for return of the watches (i.e. "Rolex's famous Oyster watches found defective and not water resistant!").
Likewise, if in years to come Rolex put out the private bulletin to their dealers that all "X" dial models should be sent to New York for testing and/or replacement of their "X" dials (where "X" is an unwanted quantity), then it would not really be all that different from Rolex's standpoint. Even if there were, say, actual public recalls going on (such as 6542 Bakelite bezels) there could also be simultaneous unpublicized recalls going on, as well.
They had issued other unpublicized need-to-know service alerts previously and we can see that this was their modus operandi for dealing with problems for watches already in the field...when they had the choice.
Therefore, this twin track method--public and private recalls of questionable watches--is most probably how Rolex faced the S-90 scare in the late 50s.
Let's not forget: "The company [Rolex] said it has instructed dealers to ship back all the special model watches [6542 GMT] for checking."
How many other models had they instructed their dealers to ship back for testing that were not publicly known? Maybe most of the 50s-era super luminous Sports models? Once again, methinks so.

Best,
T.

It wasn't really a recall per se...but when the watch came into an independent service shop or an AD for routine work, the super oyster crown was possibly no longer available as they had discovered that it was flawed and it was not longer in manufacture, so it was a bigger job than most people would be up to possibly to retap the case and fit it for a 600 crown. They worked initially. It is the archetype basis for ALL non screw down waterproof crowns...Omega comes to mind....they also go bad and leak.

The paperwork that shows this is at the end of a crown and tube list for the old models. When it comes to Super Oyster it says to send it to New York to be fitted with a 600 crown and tube.



The strange thing is....This literature if from the late 50's...and I have a friend whose 6084 I serviced...that has RNY markings on the inside of the case back from the 70's....and it retains its super oyster crown....go figure that out?

...into Rolex philosophy as a company on the service side and not just as a seller of watches. I think it definitely points to a standard way for them to deal with issues/problems.
And as for the 70s service--maybe by then they weren't guaranteeing the water resistance of these watches anymore so they didn't need to swap crowns? Or...they forgot? LOL.
All the best & thanks again,
Tom