Seiko 6138-0040, All original, fully serviced & ready to go. Dec '76.
This is an entirely original (original to itself) example of the black bullhead. It was made in December 1976.
Here is a video overview of the watch: https://youtu.be/RGTz_-ma2mU
Entirely original, and original to itself
Dial lume is a lovely tan, original, and rarely seen
no chips or damage to minute hand, or sweep hand
Roman / English daywheel
Movement entirely serviced last month, April 2019
Case rebuilt with all new seals
Bracelet is full length, will easily fit 7.75”
All case finish is original.
Case shows wear consistent with gentle longer-term use, but no abuse
All case sealing surfaces are perfect, no corrosion of any kind
Watch never had water inside
Chronograph snaps cleanly to zero
Main sweep resets slightly to the right from top dead center