OhBugman Collection / Serial #7948 E. Ingraham Co. Grade Sentinel Secometer Serial #7948 Movement Image Dial Image Case Image Manufacturer E. Ingraham Co. Grade Sentinel Secometer Serial Number 7948 Size 16s Model Sentinel Jewel Count 0 Setting Pendant Finish Flat Case Material Base Metal Case Manufacturer Unknown Case Manufacturer Case Serial # none found Case Details Unmarked Dial Type Singlepressed Dial Signing Name Sentinel Movement Markings The E. Ingerham Company Bristol, Conn. USA