You are wise to be wary of this watch. The Korean writing is a tip-off.
There is something in the Korean collecting culture that encourages redials of vintage watches. This is just another example.
The case does seem to be missing screws, but not all original cases had these, so I would need to see other examples of this case reference to know if the case screws were used.
The movement looks to have seen better days and has some rust as well.
This looks like a potential money pit.
gatorcpa
Click to expand...