That crystal had a rough life
Once I took the watch apart, I couldn’t help myself but to work on the crystal. I did some research and find out that the Seiko branded Hardlex Crystal is somewhere around 7 on the hardness scale from 0 to 10. I also find out that it is possible to remove scratches with a few different levels of sand paper. First I started with a thicker grit of 800 until the deeper scratches disappeared. That…
