Certina Argonaut 280 for men. Case of 36,78 mm without original Certina crown (good condition). Case in good condition (small dig at the right side). New plexi. Original dial and hands in excellent condition. Engraved screwed back n°5801 280/9666*. Certina automatic movement, caliber 25-651 (28j) just serviced. Date at 6H.