Crowned Koi
Certificate of Authentication
CK-CERT-27559A42
Brand
Grand Seiko
Model
Automatic Spring Drive 3-Day GMT
Reference
SBGE277
Year
2022
Serial
1D••••
Authenticated by
Pat at Crowned Koi
Date Issued
August 14, 2026
Verify at crownedkoi.com/authentication/27559a429c454dcaa7e7fbc067830db4