This is an authentic postally Used Stamp.

Defects such as creases, tears, or pulled perf(s) may be present as seen in the picture. 

Stamps of the cultural revolution period are scarce used as the government did not wish the face of the stamp to be defaced and they severely discouraged stamp collecting. 

(USA) postage is free.

International Postage $2.00 if purchase is under $60.

International Postage $14.00 if purchase is over $60.