Quote:
Originally Posted by padi56
Around 2015 Rolex required all ADs to begin including green Superlative Chronometer tags with new customer purchases, rather than the red seal. And at this time many red seal watches in stock with the older COSC were given the green seals. In the real world the green seals were mainly to indicate the change to 5 year warranty. And fact the bare uncased movements are still tested at the COSC to a AVERAGE -4+6 daily seconds to get the COSC certification to have the word chronometer on the dial. Rolex then tests many at a time with movement in its case to the -2+2 precision spec. And this change was mainly done because of industry pressure, as competitors such as Omega had offered five year guarantees and new timing spec so Rolex had to follow. The term superlative chronometer has been on Rolex dials for many decades, and in the real world all the Rolex movements since the 15 series when regulated could match this new marketing spec.
Position Of Watch seconds Per Day Rolex precision test this is still a pass result.
Dial Up +2
Dial Down -1
6 o’clock +3
9 o’clock -3
3 o’clock +5
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Yep, I know.
And that's what one pays for, the exact regulation. It takes time and effort. Of course with enough patience one can regulate cheaper movements to cosc or better specs. My point was - that Rolex guarantees maximum -2 or +2 and you can hold them to it and they will regulate the watch to match this.