Seiko 6138-0040 "Kuro Uma" ["Black Horse"], AKA "Black Bullhead ...
Seiko 6138-0040, September 1979. Fully restored functionally, all original case finish, dial, hands, movement.
Original in all respects - dial, hands, case finish, insert, lume
Austral-asian model, Roman / English daywheel
6138B movement fully serviced, timed and adjusted
All new seals
KVW 340W14GN00 Hardlex crystal
Case shows signs of wear but no abuse. Sharp case lines, intact brushing. Case has never been polished.
Lume glows but only for a short time. Some patina to the outer end of the minute hand lume.
Movement spring is upgraded to a heavier-duty type (custom made here) to hold the movement firmly
NOS stem installed
Buttons are the “Piston” type from the 6138-001x models, rather than the smooth type intended for this model. These are service replacements and I have left them.
Head only, but excellent quality reproductions of the original asymmetric bracelet are available for $29.99 USD on eBay.