Vintage Seiko 6139-7100 automatic chronograph, often referred to by collectors as the “Helmet” due to its distinctive case shape.
This model is part of Seiko’s legendary 6139 series, one of the world’s first automatic chronograph movements, introduced in the late 1960s. A true milestone in horological history and highly sought after by collectors today.
The watch is currently running, with chronograph function present. It has not been recently serviced, so timekeeping accuracy is not guaranteed.
Original dial with day-date complication, showing honest vintage patina. Hands and markers appear original. Case shows typical wear consistent with age. Some visible dust/marks under the crystal. Fitted with Seiko bracelet.
Specifications:
Model: Seiko 6139-7100 “Helmet”
Movement: Automatic chronograph (Seiko 6139)
Case size: approx. 40mm (excluding crown)
Functions: Chronograph, day & date
Era: 1970s
Material: Stainless steel
A genuine and honest example of an iconic vintage Seiko chronograph — ideal for collectors or enthusiasts looking for a historically important piece.
Please study photos carefully as they form part of the description.
Sold as seen – no returns on vintage watches.