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Message: <blockquote data-quote="thor447" data-source="post: 3951402" data-attributes="member: 24867">Hello OSA.  It's been a little bit but we're back with another OSA owned watch rebuild thread.  This one is a really stunning Seiko 6138-0040 (a.k.a Bullhead) made in June of 1977.  They don't come much cooler (for me at least) than this folks!!  For those of you who've read some of the previous rebuild threads and their comments, you may already know who owns this watch. If not, I'll leave it to him to chime in if he chooses to do so.A little history on this watch.  Seiko is credited with making the first production automatic chronograph movement.  There were other prototypes around at the time of Seiko's release, but they were the first ones to bring them to full production.  While this is impressive enough, these 6138 and 6139 movements (dual register and single register) they created are very well made column wheel (more on that later) chronograph movements. There was really only one weak point on the 6138 movement (which is fixed now on this watch), but otherwise they are well designed, machined, and excellent timekeepers.  The line of chronographs that Seiko put out in the 70's are just so eye catching, that nothing today really compares.  They'd probably make a killing if they would start remaking them again.The owner of this watch bought it in a PX, and if I remember correctly, he wore it daily until it stopped working in the late 80's or early 90's.  He had sent it off to repair, but it quickly failed on him again.  It has sat in his drawer since that time, untouched for 30 years or more.  This made a lot of sense to me, as the outside of the watch shows that it was definitely loved and worn, but the inside of the watch was a time capsule. Once I got the movement out of the case and out from behind the scratched up crystal, the dial and hands were flawless. Where you normally see wear around the edges of the bridge plates on the back side of the watch, (from the bearing on the rotor getting worn and rubbing the bridge plates), this had absolutely none of that.  It tells us that this watch has sat for a long period of it's life. This is something you just don't see, and what collectors kill for.Now, on to the rebuild.  FYI, this will be VERY pic heavy, and will require multiple follow up posts to get everything in.  Sit back, relax, and make sure you have some time to read before moving forward to the next post, there is 11 more of them!!</blockquote>

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