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phez · 29 March 2019, 03:06 AM

Can someone please tell me how accurate a Speedmaster ‘57 is likely to be?

Is it COSC certified?

Thanks.

Alex_TA · 29 March 2019, 04:01 AM

I owned Speedmaster 9300 with the same movement. Yes it's certified and very stable. Mine was +3 sec a day, everyday for 3 years.

phez · 29 March 2019, 04:08 AM

Thanks

29 March 2019, 03:06 AM	#1
phez "TRF" Member Join Date: Dec 2016 Real Name: Paul Location: uk Watch: PT DD40 Ice Blue Posts: 443	Speedmaster ‘57 Can someone please tell me how accurate a Speedmaster ‘57 is likely to be? Is it COSC certified? Thanks. __________________ PT Rolex DD40 Ice Blue Quadrant Dial Blue Romans TT Tudor Glamour Double Date Black dial Grand Seiko Skyflake Grand Seiko GMT blue dial and blue GMT hand

29 March 2019, 04:08 AM	#3
phez "TRF" Member Join Date: Dec 2016 Real Name: Paul Location: uk Watch: PT DD40 Ice Blue Posts: 443	Thanks __________________ PT Rolex DD40 Ice Blue Quadrant Dial Blue Romans TT Tudor Glamour Double Date Black dial Grand Seiko Skyflake Grand Seiko GMT blue dial and blue GMT hand

29 March 2019, 04:01 AM	#2
Alex_TA "TRF" Member Join Date: Sep 2015 Location: Tel-Aviv, Israel Posts: 348	I owned Speedmaster 9300 with the same movement. Yes it's certified and very stable. Mine was +3 sec a day, everyday for 3 years.

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