Are international warranty papers as valuable as USA?

[Bensrolex]

I am considering a 1991 Datejust (I guess that counts as vintage as of this year??). It comes with original box and papers from an Asian country. I was wondering if anybody has observed any sort of bias in market valuation...if two identical 1991 Datejust with box and papers were sitting side by side, and one was from China and one was from San Francisco, would value estimates/saleability differ? I of course hasten to add that I in no way wish to offend, don't personally believe there should be any valuation difference, but also sadly wouldn't be surprised if there is. Happy New Year.