China

Printed during Dr. Sun Yat Sen period, imperforated and ungummed.

Günter Mair catalogue: CHN-A-? (1938)

Printed during the Chinese People Republic, badly perforated.

Günter Mair catalogue: CPR-A-10a (1962)

Printed on thin paper, very bad perforations.

Günter Mair catalogue: CPR-A-13 (1970)

Printed in bolder typefaces and rouletted.  I've been travelled to China frequently, 

but labels are still hard to find at post offices.  You'll be surprised they're only

 obtainable at some small town post offices (if you are lucky enough). 

Günter Mair catalogue: CPR-A-11 (1975)