China Unknown Stamps Civil War Period

Can anyone help me out on the stamps shown? They are similar to the Nord East China 1950 stamps Mich. 162-171 (type "enge Schattierungslinien"), but the provincename is not exactly the same (character left under differs), and the worth is not characterisic of Nord East China. I cannot find them anywhere in the Michel catalogue! I would be grateful for infomantion. With kind regards, Cor Both, The Netherlands

Port Arthur and Dairen
Gate of Heavenly Peace
1950
Scott Catalogue 2L73 and 2L74
Very nice values.
This section is between Northeast China and North China in my catalog.

ah thank you so much for helping me out.