1972年尼克逊访华及中国成为联合国常任理事国纪念银章。三枚。正面:理查德尼克逊和周恩来相对;反面:毛泽东在联合国大楼前朝左。<p>CHINA. Trio of U.S. Presidential Visit/United Nations Silver Medal (3 Pieces), 1972. Switzerland (Argor-Heraeus) Mint. All PCGS PROOF-64 Cameo.Obverse: Richard Nixon and Zhou Enlai facing each other; Reverse: Mao facing left, superimposed over United Nations headquarters.