Whether you want to buy this piece for your collection, estate, investor portfolio or as a special treasure for someone else – here are the specifications. Marco Polo series: this 15 gram Chinese coin struck from 90% silver has a limited edition of just 30000 pieces worldwide. It comes to you in gem proof condition as released by the China Mint in 1992. We have a VERY limited number of these coins available. Take advantage of this special offer today before someone else does. Investing in a safe and secure way in China has never been so easy and fun!