Crowned Koi
Certificate of Authentication
CK-CERT-A83E6F93
Brand
Rolex
Model
GMT-Master
Reference
16700
Year
1999
Serial
A2•••••
Authenticated by
Pat at Crowned Koi
Date Issued
August 27, 2026
Verify at crownedkoi.com/authentication/a83e6f93ea44407fb100083442685088