Shuangling 双城 automatic 1

Shuangling automatic 1

Shuangling 40 jewel automatic watch was Beijing's top-of-the-line model, and its movement has the highest jewel count of any vintage Chinese watch. The numbers 7412 on the caseback and B 73 under this one's balance suggest that the factory began to manufacture automatic watches shortly after it introduced tongji movement models to the market.