Seiko delivered no shortage of racing inspired chronographs in the 1970's, and the "Helmet" is no exception. Though earning it's nickname from the helmet shaped profile of it's unique case, it looks much more like it was ripped from the dashboard of a 1970's touring car. Set deep beneath the angular mineral crystal sits a matte black dial trimmed in an array of colors, but with a very familiar layout. Much like an automotive speedometer, the seconds are displayed numerically on the inside edge of the hour markers. Trimmed in gold, the minutes of the sub register are marked out in a digital green and totaled by a slender yellow tapered baton. The hour and minute hands are black and white and off set by a bright yellow chronograph sweep. At the edge of the dial is a steep flat black tachymetric ring with the scaling laid out in a flat white. This example from November of ‘76 is an absolute stunner overall. It’s unpolished and completely original with what appears to be the original “hardlex” mineral crystal. With only a few very minor blemishes, we opted to leave it in place. The case shows some light wear throughout, but the original machined finish is still clearly visible, and the corners are razor sharp. Post service, the 6139B is keeping near perfect time, and the chronograph functions are crisp and responsive. We’ve paired it with a hard to find and period correct genuine Seiko “Milanese” bracelet that can be adjusted to fit most wrist sizes. A perfect presentation of vintage racing for the wrist, this one is sure to move as fast as it looks.

Vintage Seiko Adjustable “Milanese” Bracelet

Serviced- 10/25

Diameter- 40.5mm

Lugs- 20mm