There's no mistaking how this big boy got its nickname, and at 42mm the "Jumbo" has certainly earned it. It's size, however, is in scale with its sophistication. The matte black tri-level dial is trimmed in lean contrasting markers, and is perfectly framed by a sleek and understated stepped chapter. The white hour and minute “pencils” are a seamless extension that only serve to further amplify their bright yellow chronograph counterparts. The case is tastefully, but not overly detailed, and to say it has wrist presence is an understatement. Contoured end links smoothly integrate the bracelet which provides a comfortable and seamless finish. Independent day and date quickset, and the option to manually wind the mainspring give the 6138 a few clear advantages over its predecessor. The chronograph functions are crisp and responsive, and post service, it’s keeping near perfect time. This example from March of ‘77 is unpolished and completely original, aside from a 1:1 replacement mineral crystal. Proof that timeless design never goes out of style, the Jumbo is a classic in years only, and bound to be a front runner on any roster.

Original Seiko “Fishbone” Bracelet in Stainless Steel

Serviced 8/2/21

Diameter- 42mm

Lugs- 19mm