拍品描述： Lot 732 HAN: Han Wudi， 141-87 BC， lead 300 zhu， tortoise type， cast circa 119 BC with shao counterstamp on obverse， shao being a abbreviation for shao fu 40emperor39s private treasury41， only estimated 8-10 known specimens and this is a lovely example， VF， RRR。 Baijin Sanpin is a set of three types of coins: Dragon， Horse and Turtle issued in the Han dynasty。 34Baijin34 refers to the metal 40lead41， 34Sanpin34 refers to the fact that it was a series of three coins with different denominations: Dragon， Horse and Turtle， the last being the most rare。 Refer to article in Shanghai Symposium， The Bai Jin San Ping Coinage of Han Wudi: Early Influences From the Silk Road by James T。 Anderson。 A new metallurgical analysis of this type shows the following comosition 72。46% lead， 11。29% antimony， 10。40% Manganese， 4。64% tin， 0。73% iron， 0。47% copper。