97200 Bracelet Variation

[Lane123]

To my knowledge there are two versions of the 97200 bracelet used for the 116610 and 114060. The first iteration having a sandblasted finish on the inside of the clasp where the Rolex logo is and the second iteration with this area being polished. From what I’ve gathered online this change took place at some point between 2015-2016. Is this accurate?

For my question - would you consider it a red flag if a 2018 model 116610 has the sand blasted clasp? Or could this simply be due to Rolex running through their previous inventory? Bracelet itself appears to be in great shape and looks consistent with the age of watch. AD has it for sale as pre owned (not CPO) and their Rolex watchmaker stated the bracelet/clasp was correct.