Lake Placid Olympics 1980 China Yuan Biathlon Set Copper Coin NGC PF 66 CAMEO Collection. Please log in to NGC’s official website to check the authenticity. Note: Color of item might deviate slightly in comparison to the original article due to differences in computer monitors and different lighting conditions. International buyers please note. We will strive to provide a response within 24 hours of receiving your questions. Your total satisfaction is always our sincere wish. If, by any reason, we cannot meet your expectations. When you receive our items and feel satisfied. Please leave us positive feedbacks and our software will take care of them automatically.