[soviet]

Here are some common crystal sizes for some vintage Chinese watches. Some are not so easy to find now.

Shanghai 7120-32.10mm
Shanghai 1524-32.10mm
Shanghai Chunlei-32.10mm
Shanghai Baoshihua-32.10mm
Shanghai Diamond-32.04mm
Tianjin Dongfeng-31.90mm,31.60mm
Beijing Shuangling-31.70mm
Beijing SB-5-31.60mm
Liaoning SL2 Hongqi-31.74mm,31.80mm
Xian Panda-31.64mm
Qingdao Jinmao-32.04mm,31.70mm
Xian Yanan-32.10mm,32.25mm
Guangzhou-31.55mm
Chongqing Shancheng-31.90mm
Jiangxi Lushan-32.10mm
Nanjing Zhongshan-31.70mm,31.80mm
Xian Butterfly-32.10mm
Guangxi Guihua-32.30mm
Hebei Honglian-31.90mm
Liaocheng Taishan-31.80mm
Shanghai 1120,1010,1020-30.60mm
Shanghai 1123,1124,1524,1523-31.60mm
Shanghai A581-29.60mm,28.90mm
Shanghai 611-29.70mm
Tianjin WUYI(5.1)-29.60mm,27.30mm
Beijing Tiananmen(BS-2)-31.70mm,31.75mm,29.94mm
Qingdao-31.10mm,30.70mm
Shanghai Jiefang-32.08mm,32.04mm
Hongqi-32.08mm
Old Yanan-31.05mm
Old Guangzhou-31.60mm,31.40mm
Shanghai 8122-28mm
-end-

 

[James Haury]

Here are some common crystal sizes for some vintage Chinese watches. Some are not so easy to find now.

Shanghai 7120-32.10mm
Shanghai 1524-32.10mm
Shanghai Chunlei-32.10mm
Shanghai Baoshihua-32.10mm
Shanghai Diamond-32.04mm
Tianjin Dongfeng-31.90mm,31.60mm
Beijing Shuangling-31.70mm
Beijing SB-5-31.60mm
Liaoning SL2 Hongqi-31.74mm,31.80mm
Xian Panda-31.64mm
Qingdao Jinmao-32.04mm,31.70mm
Xian Yanan-32.10mm,32.25mm
Guangzhou-31.55mm
Chongqing Shancheng-31.90mm
Jiangxi Lushan-32.10mm
Nanjing Zhongshan-31.70mm,31.80mm
Xian Butterfly-32.10mm
Guangxi Guihua-32.30mm
Hebei Honglian-31.90mm
Liaocheng Taishan-31.80mm
Shanghai 1120,1010,1020-30.60mm
Shanghai 1123,1124,1524,1523-31.60mm
Shanghai A581-29.60mm,28.90mm
Shanghai 611-29.70mm
Tianjin WUYI(5.1)-29.60mm,27.30mm
Beijing Tiananmen(BS-2)-31.70mm,31.75mm,29.94mm
Qingdao-31.10mm,30.70mm
Shanghai Jiefang-32.08mm,32.04mm
Hongqi-32.08mm
Old Yanan-31.05mm
Old Guangzhou-31.60mm,31.40mm
Shanghai 8122-28mm
-end-

Or ,You could have a jeweler cut you one .As long as it is flat.