The People's Republic of China & Liberated Areas Stamps and Postal History

1940s-90s a group of 17 sets of JT mint stamps and 2 sets of Liberated Area issues, better including J7, J8, J10, J11, J12, J13, J23, J55 and others. Please view.
1940-90年代一组17套JT新票及2套解放区票，较佳者有J7，J8，J10，J11，J12，J13，J23，J55等。请预览。