Seiko - Seiko 5 - Big Case - Two Tone - Navy Blue - No reserve price - "7009-8431" - Men - 1976

The Seiko 5 Big Case Two Tone Navy Blue, reference 7009-8431 from 1976, is a vintage men’s watch emblematic of Seiko’s popular and versatile Seiko 5 lineup. The 'Big Case' designation indicates a larger-than-standard case size for its era, appealing to wearers favoring a bold wrist presence. The two-tone finish blends stainless steel with gold-tone accents, creating a visually striking and elegant contrast enhanced by the navy blue dial. The 7009 movement is an automatic caliber known for reliability and robustness, typical of Seiko 5 watches famed for day-date complications and durability. Originating in the mid-1970s, this watch reflects the period’s trends toward functional yet stylish watches suitable for daily use. Seiko 5 models remain favored among collectors for their historical significance and enduring quality.