Authentic Rolex endlinks? 2nd opinion needed

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I think these look genuine, just after another opinion if you could help?

cheers
 
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The stamping of the number 580 on the one on the right in the first picture looks suspect.
Do both end pieces have the tubes on the inside for the springbars?
These tubes should fit a genuine Rolex springbar 23-9291 that have a diameter of 1.96 mm, snugly.
 
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Thanks for replying.

Yes they both have the tubes on the inside.