Seiko Bullhead Chronograph Vintage Automatic 6138 — USD 8,500

The Seiko Chronograph reference 6138 represents a significant offering in Seiko's vintage chronograph catalog. It is recognized for its integrated automatic chronograph movement, a notable achievement for its era. This reference often features a distinctive case architecture and dial layouts that differentiate it from other Seiko chronographs of the period, appealing to collectors interested in the brand's mechanical chronograph development. This reference typically houses the Seiko Caliber 6138, an automatic column-wheel chronograph movement with vertical clutch. The case is generally constructed from stainless steel, with variations in finishing and design across different sub-references. Common case diameters for models within the 6138 family range, often featuring a Hardlex crystal. The movement provides a functional power reserve, supporting the chronograph and timekeeping functions. Collectors often seek out 6138 models for their robust movements and varied aesthetic presentations. The reference includes several popular sub-variants, each with unique dial colors, sub-dial configurations, and case shapes, such as the "Bullhead" or "Panda" dials. These variations contribute to the reference's appeal among enthusiasts of vintage Japanese chronographs, offering a range of options for different collecting preferences.