VTG SEIKO ‘Helmet’ Steel Chronograph. Ref: 6139-7100, Cal: 6139B. For Parts  Description: BRAND: SEIKO MODEL: Helmet FEATURES Wristwatch Non-Date Date
VTG SEIKO Military Style Steel Wristwatch. Ref: 7S26-00D0, Cal: 7S26S. For Service  Description: BRAND: SEIKO MODEL: FEATURES Wristwatch Non-Date Date