China
Type IV : as Type III but with secret Marks
| Country: | China |
| Type: | Postage stamps |
| Series: | Hong Kong Dah Tung Book print (1940) |
| Nominal: | 50 Chinese cent |
| Year: | 1940 |
| Perforation: | line 14 |
Hong Kong Dah Tung Book print (1940)
 Dr. Sun Yat-Sen |  Dr. Sun Yat-Sen |