I figure 1980s just based on the color, but the factory was built in the very late 70s. As far as I understand, the original factory stopped mechanical production in the mid 1980s, so it was a very short run. Mechanical Moranbongs are pretty rare these days in any condition, so I'm happy with mine.  
  
The crown is worn down enough to be hand scored for grip, and the finish has its share of bumps and scratches, so even though some knowledgeable writers have said most of these were gifts to dignitaries and political folks but, in any case, whoever wore this one wore it a lot.

The movement is pretty certainly based on the Semag ES95 and, reportedly, the factory imported Swiss equipment. I still have the watch and it still runs fine.

My original thinking was the balance cock might be a repair because the finishing looks crude compared to the rest of the movement, but when I searched Moranbong movements I found that many (but not all) legit vintage mechanical Moranbongs had balance cocks with different finishing than the rest of the watch, very similar to mine. Why, I don't know.

My post from back then is available here: [https://www.watchuseek.com/threads/meanwhile-in-north-korea-they-make-moranbong.487356/](https://www.watchuseek.com/threads/meanwhile-in-north-korea-they-make-moranbong.487356/), and there's a \*great\* deep dive here: [https://www.watchuseek.com/threads/moranbong-north-korea-watch.371962/](https://www.watchuseek.com/threads/moranbong-north-korea-watch.371962/)

Given a few previous Moranbong posts in the forum (N. Korean, not Chinese), here's mine, likely 1980s, Purchased 2010 from Taobao. Somehow, it made its way to China...and then Alberta, Canada.