Verification of Authenticity

[feudallordcult]

Good Morning folks,

It's has been weighing on my mind with regards on how a rolex technician actually verifies the authenticity of a rolex timepiece.

I'm concerned abt the authenticity of the 220 components that make up a rollie. A verification process would take at most 30minutes as such, my query is how would a technician verify that a genuine rolex is made up of genuine parts within such a short span of time? There are after all 220 components. What if a certain component has been swapped? Would they know?

I was informed that some of the A-grade fakes in certain countries are so well-made and close to the real thing that even some experienced watch technicians encountered difficulty in ascertaining the authenticity of the movement. That being said, an A grade can easily cost up to SGD1.5 to 2k.

In view of the above-mentioned, does anyone have any idea how the rsc technician ascertain the authenticity of a rollie? Are there pictures or diagrams that they normally use for reference? I know for sure that they won't strip and assemble dutring verification. I kinda think it's more of experience and obviously visual. If that's the case, think shops selling pre-owned watches can also do verification and earn some extra income.

What do you guys know of the verification process in RSC? Is it a mere Go-through-motion sort of inspection or is it a thorough check? If so, how can they be cocksure that every single component comes from the rolex manufacture?

Thanks in advance for your inputs on this matter