1980年第十三届冬奥会纪念铜币24克全套4枚。男子速降、女子花样滑冰、女子速度滑冰、男子现代冬季两项。(t) CHINA. Quartet of Winter Olympic Brass Yuan Pieforts (4 Pieces), 1980. All PCGS PROOF-69 Deep Cameo.1) Biathlon. KM-P10. <p>2) Speed Skating. KM-P8.<p>3) Figure Skating. KM-P9. <p>4) Alpine Skiing. KM-P7.<strong>To view all items from the Tony Ma Collection, click <a href=https://auctions.stacksbowers.com/lots?sort=auction_date_lot_number_asc&limit=96&search=From+the+Tony+Ma+Collection.&lots_range=upcoming> here.</a></strong>From the Tony Ma Collection.