D. L. Hansen. 20th Century Gold Proof. (1908-1915) 的钱币相册
1908 $2.50 PR67
PCGS #7957
1911 $2.50 PR67+
PCGS #7960
1912 $2.50 PR67+
PCGS #7961
1909 $5 PR66+
PCGS #8540
1910 $5 PR65+
PCGS #8541
1912 $5 PR66+
PCGS #8543
1910 $10 PR67
PCGS #8892
1912 $10 PR65
PCGS #8894
1911 $20 PR66+
PCGS #9208
1912 $20 PR65
PCGS #9209
1914 $20 PR63
PCGS #9211
1915 $20 PR65+
PCGS #9212