Zijingshan was the first model of Zhonghsn watches. It is one of the most sought after vintage Chinese watches for its significance as the 1st poor Chinese watches. It reminds people of the difficult times when even a Shanghai 7120 19 jewels hand-wind watch was too expensive for many Chinese families. Still a Zijinshan cost about one monthly salary of a young Chinese worker's in the 1950-70's.
Zijinshan is not shock proof, so that it is even more difficult to find one in clean working conditions.