Crowned Koi
Certificate of Authentication
CK-CERT-6C6B5191
Brand
Rolex
Model
GMT-Master II
Reference
16710
Serial
Z6•••••
Authenticated by
Pat at Crowned Koi
Date Issued
September 26, 2025
Verify at crownedkoi.com/authentication/6c6b5191f5bf4353a21b5d90f5e46631