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jimi · 27 March 2014, 09:13 AM

I recently acquired an '87 Datejust, caliber 3035. It's the most accurate of my 3 Rolex, gaining only 1 second in 2 weeks and it's on my wrist 24/7. There's only 1 problem: on the timegrapher, it has a high beat error of 0.7-1.0 but beat rate is -1 to +2secs/day on all positions with amplitudes of 245 to mid 270's.
Its service history is unknown but since I bought this from a Jewelry store that has an in-house watchmaker, I suspect that it has been cleaned or oiled (?) and adjusted. I doubt that it underwent full service.
Would you be bothered by the high beat error?
Thanks for any input.
Another reason not to buy a timegrapher?

27 March 2014, 09:13 AM	#1
jimi "TRF" Member Join Date: Apr 2008 Location: Rolex Box Posts: 100	Questions before service I recently acquired an '87 Datejust, caliber 3035. It's the most accurate of my 3 Rolex, gaining only 1 second in 2 weeks and it's on my wrist 24/7. There's only 1 problem: on the timegrapher, it has a high beat error of 0.7-1.0 but beat rate is -1 to +2secs/day on all positions with amplitudes of 245 to mid 270's. Its service history is unknown but since I bought this from a Jewelry store that has an in-house watchmaker, I suspect that it has been cleaned or oiled (?) and adjusted. I doubt that it underwent full service. Would you be bothered by the high beat error? Thanks for any input. Another reason not to buy a timegrapher?

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