ARTICLE: The Explorer 16570-3186 - The Last Five-Digit Rolex Sports Model

[AusMaastricht]

Nice article John. I enjoyed reading it.

You might consider adding a third way to determine the presence of 3185 or 3186 besides the "Wiggle" Test or opening the watch.

I read about this on Minus4Plus6.com who where tipped by Ed who discovered this method on a French watch forum.
It's the so called "Crown Rotation Method".

One complete revolution of the crown makes the hour hand jump 6 timezones/hours = 3185
One complete revolution of the crown makes the hour hand jump 8-9 timezones/hours = 3186