Sentinel Federal Credit Union ← View details 757 West 2nd Street, Winner, SD 57580 +1 605-842-3581 sentinelfcu.org Suggest an Edit Name* State* Locality* ZIP* Street address* Phone* Website Opening hours Monday: 08:00 am — 03:30 pm Tuesday: 08:00 am — 03:30 pm Wednesday: 08:00 am — 03:30 pm Thursday: 08:00 am — 03:30 pm Friday: 08:00 am — 03:30 pm Your comments * — Required information