Southwest State Bank Address: 122 E Main St, Sentinel, OK 73664 Phone: (580) 393-4367 Banks, State Commercial Banks Other Businesses: Lyndales at 202 N 3rd, Sentinel, OK 73664 L S D's Restaurant at 300 E Main St, Sentinel, OK 73664 Red Barn Dine In at 123 E N Boundary, Sentinel, OK 73664