Crowned Koi
Certificate of Authentication
CK-CERT-AA63AF02
Brand
Rolex
Model
GMT-Master II
Reference
16710
Year
1999
Serial
A9•••••
Authenticated by
Pat at Crowned Koi
Date Issued
July 29, 2026
Verify at crownedkoi.com/authentication/aa63af025d7041ef9367bf079f6e28a0