Hi leseullunique,
As to your question regarding the whereabouts of the second specimen, I tried checking some additional
Chinese references.
Zhong Guo Gu Qian Mu Lu (
Catalog of
Chinese Ancient Coins, 1992) only states that two specimens exist and ranks them as "Grade 1 -- Priceless".
Gu Qian Xin Dian (New Illustrative Plates of
Chinese Ancient Coins) provides some interesting information. The reference states that there are "two and a half" specimens known to exist. One specimen is whole, one has damage, and one only has the top portion. According to the text, all were unearthed in Xian, Shaanxi Province.
This reference further states that the "whole" one was unearthed in 1921 northwest of the city of Xian which was the site of government offices at the end of the Han Dynasty.
Unfortunately, the reference does not give any additional details concerning the "damaged" or "half" specimens.
None of these references mention where these pieces are at present. This is not unusual, however, as these
types of coin books usually do not mention where
rare coins are located or who owns them.
Sorry I could not find the answer to your question.
Gary