Sub 116610 Clasp - brush vs polished times?

[Spoonage]

I recall the other thread... I believe it was a phase in so no particular hard cut off of the sandblasted "blades" of the clasp. Plus no way to confirm if an AD had two sitting next to each other 1 polished 1 not and when they sold as the SS models were more plentiful back in 2015 / 2016.

But as my reference bought new in coffin (AD just received it) in Oct 2015 with sandblasted blades.

Another way to maybe help date it (if you don't have the warranty card with original purchase date) is the dial font. That changed also on the Subs particularly the depth rating font and spacing for "ft" and "m"