Need TechXpert (or anyone else's) advice on Regulation

[gpateesq]

My 1974 Tudor Oysterprince (ETA 2784) is consistently losing 12 seconds a day, which doesn't seem right to me. (But I realize the movement is 37 years old and maybe losing 12 seconds a day isn't so bad.)

Rolex says they cannot regulate it because they don't have the parts. I've sent it back to the place where it was serviced (in 10/2010) and he said he regulated it but nothing seems to have changed.

So I have 2 questions:

1. If it was your watch would you continue to try and regulate it so that it at least loses LESS than 12 seconds a day?

2. What parts would likely be needed to regulate this movement, (assuming they can be found)?

Thank you for your time.

Greg

[crhfish]

I would leave it alone. Have you tried positioning the watch over night to speed it up a bit?

12 seconds a day on a watch that old is not that bad IMO. You could have someone go completely through it,clean it, lube it replace the mainspring, etc and it still might be out more than half that.

[Tylden Reed]

The regulator is there to do a job. I assume the hairspring was adjusted properly when last serviced. The chances are that there are positional errors but, whatever the timing machine says the timing is, I suggest the watchmaker advances by 12 or 13 seconds per day from what the machine shows - having first made sure the watch is fully wound. The results will not be exact but must be better than it is at the moment. Good luck, Tylden.