Experiences sending very old Rolexes to RSC?

[powerfunk]

Hi all,
Longtime lurker here; love this forum. As I understand it, Rolex Service Centers used to only service watches under 30 years old or so. My local AD told me that RSC will now service a Rolex of any age.

Obviously RSC replaces whatever parts it deems necessary, and non-original parts are clearly not ideal, but I have a 1950's Speedking in average-ish condition that's somewhat over-polished anyway.

It's running around +90 per day, so, since it needs a service anyway, I was thinking a complete RSC overhaul might actually be cool.

So I was wondering, has anybody had experience sending OLD watches to RSC? And would they actually replace parts with correct NOS Speedking parts they have lying around?? Thanks!

(Will post pics soon...currently logging in from work, which I'm sure no one else is doing)