Crowned Koi
Certificate of Authentication
CK-CERT-22622DD5
Brand
Grand Seiko
Model
Automatic Spring Drive 3-Day
Reference
SBGA375
Year
2023
Serial
31••••
Authenticated by
Pat at Crowned Koi
Date Issued
August 14, 2026
Verify at crownedkoi.com/authentication/22622dd58f6a421ca9e99e5892c4be47