Here is another before and after. An Aseikon branded Ruhla calibre 24 from 1976 (April 5 to April 11, 1976 to be precise). What were you doing that week in 1976?
Here are the before shots. The watch was covered in thick crud around the crystal and the back.
The watch had probably suffered from condensation during the latter part of its life as the dial showed signs of having been wet at some point.
The crystal was in real need of replacement. I think originally it had a faceted crystal. It was certainly very thick but had obviously been polished down as it had probably received scatches and scrapes several time during its life. Here are a couple of profile images. You can see it is thick but like the surface of the sea!
The movement was absolutely fine. With a clean it was working perfectly and keeping time with practically no adjustment. This is what I like about Ruhlas. This week I have been working on two others. One from 1969 and another from 1972. Both are running very well with very limited attention from me. Not bad for nearly 50 years!
Here are s couple of after shots.