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Earl Camembert · 27 February 2010, 04:06 PM

Am I correct that the first DD 6511 had a 1055 movement and after one year the DD 6611 also had a 1055 but with an improved balance wheel?

Is this a real 1055 and if so is this the old or new one?

dalevito · 4 March 2011, 06:52 AM

yes that would be correct. The latter is the 1055 with microstella balance aka 1055b. This was also the first Day Date to be marked 'Superlative Chronometer Officially Certified'. The first iteration of the 1055 was not that precise and the change of day / date took to much energy. I can't see your pic however.

Regards from The Netherlands,

Dale Vito

27 February 2010, 04:06 PM	#1
Earl Camembert Banned Join Date: Jan 2008 Location: New Jersey Posts: 1,858	Rolex Ref: 1055 help. Am I correct that the first DD 6511 had a 1055 movement and after one year the DD 6611 also had a 1055 but with an improved balance wheel? Is this a real 1055 and if so is this the old or new one?

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4 March 2011, 06:52 AM	#2
dalevito "TRF" Member Join Date: Oct 2010 Location: Amersfoort, NL Posts: 2	yes that would be correct. The latter is the 1055 with microstella balance aka 1055b. This was also the first Day Date to be marked 'Superlative Chronometer Officially Certified'. The first iteration of the 1055 was not that precise and the change of day / date took to much energy. I can't see your pic however. Regards from The Netherlands, Dale Vito

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