I think maybe....

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?