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Source:
Colnect
Issued by:
China, PRC
Function:
postage
Date:
3/15
/
1977
Issue:
1977
Denom:
20f
Color:
multicolored
Design type:
industries (1977)
Design:
Steel production
Watermark:
unwmk
Perf:
11.5
Catalog value:
Prev:
10f d=Telecommunications & Transportation
Next:
30f d=Trucks on mountain road
External links:
Colnect 539326..oples_Republic
