Erratic time - 116710LN GMT II

[Island_Time]

Hello everyone - first time post. I have recently received a new to me 116710LN GMT II 3186 movement with a V serial number. The seller, an actual store selling on-line indicated it had been fully serviced in 2020 by their "certified Rolex watchmaker with over 45 years experience".

Using time dot is I have discovered that the watch is running somewhat erratically even over the course of an hour. By that I mean the seconds may vary in difference throughout the course of an hour compared to time dot is - at least it seems that way. For example, around the 20 after the hour the difference seems a bit greater than when it is close to the top of the hour if that makes sense.

Regardless of that, the watch is either running fast over 24 hours (many seconds to up to a minute) or it is running slow by roughly the same amount.

The seller has been communicating well with me and feels it was damaged in transport and wants me to send it back for additional service. I called the local Rolex distributor and they indicated it was very unlikely to be magnetized and after describing the issue suggested it needed service and should be sent back to Rolex.

So what is the collective wisdom of this very experienced group of Rolex enthusiasts? Should I send it back to be serviced again by the seller or request the deal be cancelled completely and just return it?

Lovely watch otherwise :-)

Cheers all

[18078pres]

If your correct that the timing is that bad absolutely send it back it's damaged. No brainer.

[padi56]

Originally Posted by Island_Time

Hello everyone - first time post. I have recently received a new to me 116710LN GMT II 3186 movement with a V serial number. The seller, an actual store selling on-line indicated it had been fully serviced in 2020 by their "certified Rolex watchmaker with over 45 years experience".

Using time dot is I have discovered that the watch is running somewhat erratically even over the course of an hour. By that I mean the seconds may vary in difference throughout the course of an hour compared to time dot is - at least it seems that way. For example, around the 20 after the hour the difference seems a bit greater than when it is close to the top of the hour if that makes sense.

Regardless of that, the watch is either running fast over 24 hours (many seconds to up to a minute) or it is running slow by roughly the same amount.

The seller has been communicating well with me and feels it was damaged in transport and wants me to send it back for additional service. I called the local Rolex distributor and they indicated it was very unlikely to be magnetized and after describing the issue suggested it needed service and should be sent back to Rolex.

So what is the collective wisdom of this very experienced group of Rolex enthusiasts? Should I send it back to be serviced again by the seller or request the deal be cancelled completely and just return it?

Lovely watch otherwise :-)

Cheers all

Many things effect all mechanical watches when wearing things like gravity mainspring-power reserve,metal expansion and contraction, temperature variations, subtle changes in lubrication and friction, shocks, and so on.And you cannot test any watch for accuracy the way you are doing it.

First give your watch a full manual wind thats 40 plus full crown turns clockwise only dont worry as you cannot over-wind it.Then set your watch with a reliable time source for this test any quartz watch/clock will do that's accurate enough.Wear your watch for 8 hours plus a day with reasonable wrist activity to wind it and keep mainspring power reserve at peak, check time once only every 24 hours with same setting source, write down the lose or gain do this for 7 complete days.Then average out the lose or gain over those 7 days for a accurate result,if after 7 day test if still way out could need just simple regulation.