can anyone confirm or deny if the peoples republic of china offered a 38mm 23.6 gram coin or metal at the 82 fair to promote the first issue of gold panda bullion coinage? I found one that says worlds fair 1982 m. m. and bill on one side and the great wall with peoples republic of china and four Chinese characters on the other. it is struck in proof and scratch tested 10K but some wear suggests it is only a plated planchet. Has anyone seen this before? thanks in advance.