Vintage Seiko 6139-6002 Chronograph Service & Overhaul

Recently this Seiko can across my bench, it was sent in the from the Netherlands and wasn’t in working condition and looks to have taken in water at some point.

Having looking at the watch it seems that either all the gaskets have diminished or the watch was put back without them!


A new mainspring and gaskets were order and some parts treated for rust.  The owner had also supplied me with a replacement glass that was installed.

During the disassembly the the lume on the hands had started to crumble so i restored the hands and did my best to match the existing lume patina on the dial

The watch was ready to be assembled again.


The watch was cased up , the owner wanted to keep the vintage look so therefore we did not change the bezel.