Accuracy update--Rolex OP 116000 Concentric Dial

[horophile1]

Hello, Rolex folks!
Getting back to the forum after a long absence!
I've had my 116000 OP (M-serial) Concentric black dial for nearly 9 months now. Figured I would share an accuracy report, beginning with November 25, 2017. The watch has not stopped since, and a winder has not been used, therefore it's depended upon wrist action and manual winding combined. I am posting the entire series of WatchCheck screenshots from 11.25 through 03.10.18 (yesterday). You will notice a few large(r) drops or loss in time (usually occurred when off the wrist at least 1.5 days without any manual winding occurring; significant drops (a couple of these, deviation of about -30s) always occurred when the watch was quite literally within about the last hour of power reserve. One recent significant gain (+10, inst rate) was when I accidentally pulled it out to set time while winding, so I added a few seconds by my own error. As you can see, accuracy is now at avg +0.2 s per day over the last four months! Without a doubt, hardly a better testimonial to classic accuracy of these timepieces. Even the resumption rate is commendable. Enjoy!

[horophile1]

Final two screenshots.

[rollee1]

Awesome feat in documenting, I do the same. Nuts!
Great accuracy and keep it up.
Thanks for sharing.

[horophile1]

Yeah, it's nutso, isn't it? Just a closet hobby; almost no one but forum junkies knows about it! lol
Anyway, 10-year old piece that is still far within COSC and even Rolex's +2/-2 modern specs. No doubt it's been serviced at least once (I only bought the piece last year, pre-owned). If it has not been serviced in 10 years, it's the most awesome piece ever made, but I don't think it would maintain this accuracy without having been serviced in that timeframe, at least once. Thanks for replying!