Seiko 6105-8110 2nd Diver 150m Captain Willard 44mm — USD 2,598

The Seiko 6105-8110 is a prominent reference within Seiko's third generation of professional dive watches, produced from the late 1960s through the 1970s. It succeeded earlier models like the 62MAS and the 6105-8000/9, establishing a distinctive design language that would influence subsequent Seiko divers. This reference gained considerable recognition for its robust construction and reliability, particularly among military personnel. This model features an asymmetrical cushion-shaped case, measuring approximately 44mm in diameter, designed to protect the crown at 4 o'clock. It houses the automatic Seiko Caliber 6105 movement, known for its hacking function in later iterations. The dial typically presents with large luminous hour markers and hands for legibility in low light conditions, complemented by a bi-directional rotating bezel for dive timing. The caseback is often screw-down, contributing to its water resistance. For collectors, the 6105-8110 is highly sought after due to its historical significance and unique aesthetic. Its association with military use during the Vietnam War has contributed to its enduring appeal. Original examples in good condition, especially those with intact components, command significant interest in the vintage watch market, representing a key period in Seiko's dive watch development.