In this article I will discuss a beautiful circa 1967 vintage Grand Seiko Hi-Beat Ref. 6146-8030TAD wristwatch that I recently sent in to Grand Seiko Japan to be overhauled and serviced. The timepiece needed a cleaning, lubrication, adjustment and new plastic crystal, but apart from that everything appeared to be original and in very good condition. Additionally, when I sent it in, the watch could not hold any power, and as I feared, it was due to a broken mainspring (which winds up and then releases the power to animate the watch). No worries, though, they can just put a new mainspring in when they service the watch and everything will be working again, right? After all, they are the manufacturer of the watch. Wrong.