Authenticity of this coin is guaranteed by NGC. Add a map to your own listings. The item "China 1997 Hong Kong Returns to China Gold Set 10 Yuan Ox + Tri-Metallic Medal" is in sale since Tuesday, October 3, 2017. This item is in the category "Coins & Paper Money\Coins\ World\Asia\China\PRC (1949-Now)".The seller is "logicpapa" and is located in San Francisco, California. This item can be shipped worldwide.