Seiko 6105-8000 (Pre-owned - Good) — USD 2,800 on eBay

The Seiko 6105-8000 is a significant diver's watch from the brand's history, serving as a foundational design for many subsequent Seiko diver models. It is recognized for its distinctive curved case and the crown placement at the four o'clock position, which became a signature element in Seiko's professional dive watch aesthetic. This reference represents a period when Seiko was establishing its reputation for robust and reliable timepieces suitable for demanding environments. Equipped with an automatic movement, the 6105-8000 was designed for functionality and durability. Its construction focused on providing water resistance and legibility, essential characteristics for a diver's tool watch. The case shape was engineered for comfort on the wrist while maintaining a substantial presence. For collectors, the 6105-8000 holds importance as a precursor to more widely known Seiko divers. Its design influence is evident in later generations, making it a key reference for understanding the evolution of Seiko's diver's watch lineage. It is appreciated for its historical context and its role in shaping the brand's identity in the dive watch segment.