Does this 1675 look correct?

[visualplane]

Do these look original, authentic? Thanks

https://freeimage.host/i/HvyuIkl
https://freeimage.host/i/HvyuTp2
https://freeimage.host/i/Hvyux2f
https://freeimage.host/i/Hvyuz74
https://freeimage.host/i/HvyuAIS
https://freeimage.host/i/HvyuRh7
https://freeimage.host/i/Hvyu5Q9
https://freeimage.host/i/HvyuYBe

[visualplane]

[TimeLord2]

I am not an expert on this but the case itself looks nice as the case back says 2nd quarter 1971. Don't know if that is consistent with your serial number as that was not shared. The fat font insert is very nice and I would assume to be authentic given the striations on the blue portion. Bracelet I have a few problems with; end links, blades, general links of the rivet bracelet but again not an expert. Could be a franken. 1570 Movement looks nice, although, I think for this year there might not be hacking on the seconds hand. Hands in general are mismatched with the 24-hour hand the most recent replacement or just a bad relume job. This is a good list to check your serial number against, by @Tools https://www.rolexforums.com/showthread.php?t=54362
check your actual dial for that serial range here:
https://gmtmaster1675.com/matte-dials/
This is a job for Springer or Swish or GGGMT. good luck!

[springer]

Originally Posted by visualplane

Do these look original, authentic? Thanks

https://freeimage.host/i/HvyuIkl
https://freeimage.host/i/HvyuTp2
https://freeimage.host/i/Hvyux2f
https://freeimage.host/i/Hvyuz74
https://freeimage.host/i/HvyuAIS
https://freeimage.host/i/HvyuRh7
https://freeimage.host/i/Hvyu5Q9
https://freeimage.host/i/HvyuYBe

The watch appears authentic as well as the genuine, USA manufactured C&I bracelet.

[springer]

Originally Posted by TimeLord2

I am not an expert on this but the case itself looks nice as the case back says 2nd quarter 1971. Don't know if that is consistent with your serial number as that was not shared. The fat font insert is very nice and I would assume to be authentic given the striations on the blue portion. Bracelet I have a few problems with; end links, blades, general links of the rivet bracelet but again not an expert. Could be a franken. 1570 Movement looks nice, although, I think for this year there might not be hacking on the seconds hand. Hands in general are mismatched with the 24-hour hand the most recent replacement or just a bad relume job. This is a good list to check your serial number against, by @Tools https://www.rolexforums.com/showthread.php?t=54362
check your actual dial for that serial range here:
https://gmtmaster1675.com/matte-dials/
This is a job for Springer or Swish or GGGMT. good luck!

Study up on those C&I rivet bracelets. There are plenty of samples on google or at gmtforum.com. 100% genuine and not a fraken.

[visualplane]

So far, so good, thanks!

[TimeLord2]

Originally Posted by springer

Study up on those C&I rivet bracelets. There are plenty of samples on google or at gmtforum.com. 100% genuine and not a fraken.

Thanks for the advice Springer. Appreciated!

[Pete_mcC]

Judging by the wear marks on the lugs, the bracelet is a later addition to the watch