The 6138-0040 is one of the more sought after chronographs from Seiko. It has two main variants - one maroon and brown and another blue and black. I have both in my collection that I consider among my favorite watches.
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The watch often called the "Seiko Bullhead" or simply "Bullhead" has 2 registers for the chronograph. The day wheel features Kanji and English days.
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Side view again featuring the registers. The hour & minute hands are somewhat stained. These are not luminous for this model.
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The other side view showing the case and bezel to be overall in great condition.
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Close-up of the dial showing it to be in great condition. It is aged but I suspect it is not the original one. The dial number matches or is consistent with the model number at the back cover.
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The strap is an original stainless Seiko 5 Sports that is from the same period but is not the original for this model. You can find nice aftermarket fishbone bracelets for this watch.
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The bull's head features the crown and the two chronograph buttons as "horns".
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Case back showing the correct model number and the serial number indicating this watch to have been manufactured in August 1976.
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The obligatory wrist shot. I tried to find a photo when I first wore this watch but its somehow lost in an old phone. I wasn't documenting my collection at the time.
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The watch is powered by a Cal. 6138B movement that runs at 21,600 A/h with a potential power reserve of 45h. It is the same movement in the Kakume so they actually share parts. A friend even joked that it seems these watches were like Toyotas with the common parts among various models.
Here is a nice reference from The Spring Bar for the Bullhead collector. :)
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