Dear All:
Thank you for your answer, because it is a Rolex watch ...hahahaha
)
The watch I have been to Taiwan Rolex service center maintenance, and indeed they have a query whether it is correct blue bezel; the last Rolex company's Reply: No problem, this is the original watch.
I believe it is very rare, the number of production it is less than the of Ref.1675 blue bezel....
TED