This Seiko 6105-8119 watch is in really good condition.  The original owner served in Vietnam, so chances are that he bought this watch over there at a PX somewhere in SE Asia. I have owned it since 1985, and it has been kept in the dry climate of Colorado.  Therefore there is no "jungle rot" like you see on so many of these watches.  I had it lubed and serviced by an authorized Seiko dealer in the fall of 2011, because in this dry climate, the lubricating oil had dried out. I have never worn it other than to check that it keeps good time, because it is too big for me. Also, this is an automatic watch, meaning that it runs down if you don't wear it.  I just don't see me wearing it enough to keep it wound. It has had very little use in the past 33 years.   

The case, mechanism, dial, hands, and bezel are all original. The crystal has been replaced.  The strap is not original, I just put a strap on there so I could wear it and test it out after the servicing.  I am assuming that whoever buys this watch will have some personal preferences about the strap or band. The watch will ship with this band.

The luminous paint on the dial and hands is in excellent condition and still shines strongly after being illuminated. This paint usually does not survive well on the watches which come from humid SE Asia. Most examples of this watch either show decay on the hands and dial, or have had the hands and dial replaced. I have included a picture of the watch taken after shining a flashlight on the dial, so you can see how luminous it is.  Even the luminous dot on the bezel still glows. So does the orange dot on the second hand. 

The bezel rotates, in either direction, with a solid click. The "hack" feature works.  The "fast" date change feature works.  For anyone not familiar with this type of watch, that means winding the watch past midnight, back to 8:00 pm, then midnight, then 8:00 pm., and so on, changing the date one number at a time. These watches do not have the feature where you can pull out the stem part way and change the date.   

The screw down crown works, in that it locks in position.  However, the stem can be pulled out from this position, suggesting that the mechanism is probably worn.  I would not suggest using this watch as a dive watch without getting it checked out, although it did pass the pressure test back in 2011.

There are some small marks on the case and bezel, which the pictures tend to make very obvious. But what else would you expect from a watch worn in 'Nam? The case has not been polished or restored.  I could have touched up some of the tiny marks on the bezel, but I did not think that would be right. 

Overall, this is one of the best examples of the Seiko 6105-8119 out there.